/* texmfmp.c: Hand-coded routines for TeX or Metafont in C. Originally written by Tim Morgan, drawing from other Unix ports of TeX. This is a collection of miscellany, everything that's easier (or only possible) to do in C. This file is public domain. */ /* This file is included from, e.g., texextra,c after #define EXTERN #include to instantiate data from texd.h here. The ?d.h file is what #defines TeX or MF, which avoids the need for a special Makefile rule. */ #include #include #include #include #include #include #ifdef WIN32 #include #endif #if defined (HAVE_SYS_TIME_H) #include #elif defined (HAVE_SYS_TIMEB_H) #include #endif #include /* For `struct tm'. Moved here for Visual Studio 2005. */ #if defined(__STDC__) #include #endif #include /* Catch interrupts. */ #include /* {tex,mf}d.h defines TeX, MF, INI, and other such symbols. Unfortunately there's no way to get the banner into this code, so just repeat the text. */ /* We also define predicates, e.g., IS_eTeX for all e-TeX like engines, so the rest of this file can remain unchanged when adding a new engine. */ #ifdef TeX #if defined(XeTeX) #define IS_eTeX 1 #include #elif defined (eTeX) #define IS_eTeX 1 #include #elif defined (pdfTeX) #define IS_eTeX 1 #include #include #elif defined (Aleph) #define IS_eTeX 1 #include #elif defined (pTeX) #define IS_pTeX 1 #include #elif defined (epTeX) #define IS_eTeX 1 #define IS_pTeX 1 #include #elif defined (upTeX) #define IS_pTeX 1 #define IS_upTeX 1 #include #elif defined (eupTeX) #define IS_eTeX 1 #define IS_pTeX 1 #define IS_upTeX 1 #include #else #define BANNER "This is TeX, Version 3.1415926" #define COPYRIGHT_HOLDER "D.E. Knuth" #define AUTHOR NULL #define PROGRAM_HELP TEXHELP #define BUG_ADDRESS "tex-k@tug.org" #define DUMP_VAR TEXformatdefault #define DUMP_LENGTH_VAR formatdefaultlength #define DUMP_OPTION "fmt" #define DUMP_EXT ".fmt" #define INPUT_FORMAT kpse_tex_format #define INI_PROGRAM "initex" #define VIR_PROGRAM "virtex" #endif #define edit_var "TEXEDIT" #endif /* TeX */ #ifdef MF #define BANNER "This is Metafont, Version 2.718281" #define COPYRIGHT_HOLDER "D.E. Knuth" #define AUTHOR NULL #define PROGRAM_HELP MFHELP #define BUG_ADDRESS "tex-k@tug.org" #define DUMP_VAR MFbasedefault #define DUMP_LENGTH_VAR basedefaultlength #define DUMP_OPTION "base" #ifdef DOS #define DUMP_EXT ".bas" #else #define DUMP_EXT ".base" #endif #define INPUT_FORMAT kpse_mf_format #define INI_PROGRAM "inimf" #define VIR_PROGRAM "virmf" #define edit_var "MFEDIT" #endif /* MF */ #if !defined(IS_eTeX) # define IS_eTeX 0 #endif #if !defined(IS_pTeX) # define IS_pTeX 0 #endif #if !defined(IS_upTeX) # define IS_upTeX 0 #endif #if defined(__SyncTeX__) /* SyncTeX file name should be full path in the case where --output-directory option is given. Borrowed from LuaTeX. */ char *generic_synctex_get_current_name (void) { char *pwdbuf, *ret; if (!fullnameoffile) { ret = xstrdup(""); return ret; } if (kpse_absolute_p(fullnameoffile, false)) { return xstrdup(fullnameoffile); } pwdbuf = xgetcwd(); ret = concat3(pwdbuf, DIR_SEP_STRING, fullnameoffile); free(pwdbuf) ; return ret; } #endif #ifdef WIN32 #if !IS_pTeX FILE *Poptr; #endif #endif #if defined(TeX) || (defined(MF) && defined(WIN32)) static int Isspace (char c) { return (c == ' ' || c == '\t'); } #endif /* TeX || (MF && WIN32) */ #ifdef TeX /* Shell escape. If shellenabledp == 0, all shell escapes are forbidden. If (shellenabledp == 1 && restrictedshell == 0), any command is allowed for a shell escape. If (shellenabledp == 1 && restrictedshell == 1), only commands given in the configuration file as shell_escape_commands = kpsewhich,ebb,extractbb,mpost,metafun,... (no spaces between commands) in texmf.cnf are allowed for a shell escape in a restricted form: command name and arguments should be separated by a white space. The first word should be a command name. The quotation character for an argument with spaces, including a pathname, should be ". ' should not be used. Internally, all arguments are quoted by ' (Unix) or " (Windows) before calling the system() function in order to forbid execution of any embedded command. In addition, on Windows, special characters of cmd.exe are escaped by using (^). If the --shell-escape option is given, we set shellenabledp = 1 and restrictedshell = 0, i.e., any command is allowed. If the --shell-restricted option is given, we set shellenabledp = 1 and restrictedshell = 1, i.e., only given cmds allowed. If the --no-shell-escape option is given, we set shellenabledp = -1 (and restrictedshell is irrelevant). If none of these option are given, there are three cases: (1) In the case where shell_escape = y or shell_escape = t or shell_escape = 1 it becomes shellenabledp = 1 and restrictedshell = 0, that is, any command is allowed. (2) In the case where shell_escape = p it becomes shellenabledp = 1 and restrictedshell = 1, that is, restricted shell escape is allowed. (3) In all other cases, shellenabledp = 0, that is, shell escape is forbidden. The value of restrictedshell is irrelevant if shellenabledp == 0. */ /* cmdlist is a list of allowed commands which are given like this: shell_escape_commands = kpsewhich,ebb,extractbb,mpost,metafun in texmf.cnf. */ static char **cmdlist = NULL; static void mk_shellcmdlist (char *v) { char **p; char *q, *r; size_t n; q = v; n = 1; /* analyze the variable shell_escape_commands = foo,bar,... spaces before and after (,) are not allowed. */ while ((r = strchr (q, ',')) != 0) { n++; q = r + 1; } if (*q) n++; cmdlist = xmalloc (n * sizeof (char *)); p = cmdlist; q = v; while ((r = strchr (q, ',')) != 0) { *r = '\0'; *p++ = xstrdup (q); q = r + 1; } if (*q) *p++ = xstrdup (q); *p = NULL; } static void init_shell_escape (void) { if (shellenabledp < 0) { /* --no-shell-escape on cmd line */ shellenabledp = 0; } else { if (shellenabledp == 0) { /* no shell options on cmd line, check cnf */ char *v1 = kpse_var_value ("shell_escape"); if (v1) { if (*v1 == 't' || *v1 == 'y' || *v1 == '1') { shellenabledp = 1; } else if (*v1 == 'p') { shellenabledp = 1; restrictedshell = 1; } free (v1); } } /* If shell escapes are restricted, get allowed cmds from cnf. */ if (shellenabledp && restrictedshell == 1) { char *v2 = kpse_var_value ("shell_escape_commands"); if (v2) { mk_shellcmdlist (v2); free (v2); } } } } #ifdef WIN32 #define QUOTE '"' #else #define QUOTE '\'' #endif #ifdef WIN32 static int char_needs_quote (int c) { /* special characters of cmd.exe */ return (c == '&' || c == '|' || c == '%' || c == '<' || c == '>' || c == ';' || c == ',' || c == '(' || c == ')'); } #endif /* return values: -1 : invalid quotation of an argument 0 : command is not allowed 2 : restricted shell escape, CMD is allowed. We set *SAFECMD to a safely-quoted version of *CMD; this is what should get executed. And we set CMDNAME to its first word; this is what is checked against the shell_escape_commands list. */ static int shell_cmd_is_allowed (const char *cmd, char **safecmd, char **cmdname) { char **p; char *buf; char *c, *d; const char *s; int pre, spaces; int allow = 0; /* pre == 1 means that the previous character is a white space pre == 0 means that the previous character is not a white space */ buf = xmalloc (strlen (cmd) + 1); strcpy (buf, cmd); c = buf; while (Isspace (*c)) c++; d = c; while (!Isspace(*d) && *d) d++; *d = '\0'; /* *cmdname is the first word of the command line. For example, *cmdname == "kpsewhich" for \write18{kpsewhich --progname=dvipdfm --format="other text files" config} */ *cmdname = xstrdup (c); free (buf); /* Is *cmdname listed in a texmf.cnf vriable as shell_escape_commands = foo,bar,... ? */ p = cmdlist; if (p) { while (*p) { if (strcmp (*p, *cmdname) == 0) { /* *cmdname is found in the list, so restricted shell escape is allowed */ allow = 2; break; } p++; } } if (allow == 2) { spaces = 0; for (s = cmd; *s; s++) { if (Isspace (*s)) spaces++; } /* allocate enough memory (too much?) */ #ifdef WIN32 *safecmd = xmalloc (2 * strlen (cmd) + 3 + 2 * spaces); #else *safecmd = xmalloc (strlen (cmd) + 3 + 2 * spaces); #endif /* make a safe command line *safecmd */ s = cmd; while (Isspace (*s)) s++; d = *safecmd; while (!Isspace (*s) && *s) *d++ = *s++; pre = 1; while (*s) { /* Quotation given by a user. " should always be used; we transform it below. If ' is used, simply immediately return a quotation error. */ if (*s == '\'') { return -1; } if (*s == '"') { /* All arguments are quoted as 'foo' (Unix) or "foo" (Windows) before calling system(). Therefore closing QUOTE is necessary if the previous character is not a white space. example: --format="other text files" becomes '--format=''other text files' (Unix) "--format=""other text files" (Windows) */ if (pre == 0) *d++ = QUOTE; pre = 0; /* output the quotation mark for the quoted argument */ *d++ = QUOTE; s++; while (*s != '"') { /* Illegal use of ', or closing quotation mark is missing */ if (*s == '\'' || *s == '\0') return -1; #ifdef WIN32 if (char_needs_quote (*s)) *d++ = '^'; #endif *d++ = *s++; } /* Closing quotation mark will be output afterwards, so we do nothing here */ s++; /* The character after the closing quotation mark should be a white space or NULL */ if (!Isspace (*s) && *s) return -1; /* Beginning of a usual argument */ } else if (pre == 1 && !Isspace (*s)) { pre = 0; *d++ = QUOTE; #ifdef WIN32 if (char_needs_quote (*s)) *d++ = '^'; #endif *d++ = *s++; /* Ending of a usual argument */ } else if (pre == 0 && Isspace (*s)) { pre = 1; /* Closing quotation mark */ *d++ = QUOTE; *d++ = *s++; } else { /* Copy a character from cmd to *safecmd. */ #ifdef WIN32 if (char_needs_quote (*s)) *d++ = '^'; #endif *d++ = *s++; } } /* End of the command line */ if (pre == 0) { *d++ = QUOTE; } *d = '\0'; #ifdef WIN32 { char *p, *q, *r; p = *safecmd; if (strlen (p) > 2 && p[1] == ':' && !IS_DIR_SEP (p[2])) { q = xmalloc (strlen (p) + 2); q[0] = p[0]; q[1] = p[1]; q[2] = '/'; q[3] = '\0'; strcat (q, (p + 2)); free (*safecmd); *safecmd = q; } else if (!IS_DIR_SEP (p[0]) && !(p[1] == ':' && IS_DIR_SEP (p[2]))) { p = kpse_var_value ("SELFAUTOLOC"); if (p) { r = *safecmd; while (*r && !Isspace(*r)) r++; if (*r == '\0') q = concatn ("\"", p, "/", *safecmd, "\"", NULL); else { *r = '\0'; r++; while (*r && Isspace(*r)) r++; if (*r) q = concatn ("\"", p, "/", *safecmd, "\" ", r, NULL); else q = concatn ("\"", p, "/", *safecmd, "\"", NULL); } free (p); free (*safecmd); *safecmd = q; } } } #endif } return allow; } /* We should only be called with shellenabledp == 1. Return value: -1 if a quotation syntax error. 0 if CMD is not allowed; given shellenabledp==1, this is because shell escapes are restricted and CMD is not allowed. 1 if shell escapes are not restricted, hence any command is allowed. 2 if shell escapes are restricted and CMD is allowed (possibly after quoting). */ int runsystem (const char *cmd) { int allow = 0; char *safecmd = NULL; char *cmdname = NULL; if (shellenabledp <= 0) { return 0; } /* If restrictedshell == 0, any command is allowed. */ if (restrictedshell == 0) allow = 1; else allow = shell_cmd_is_allowed (cmd, &safecmd, &cmdname); if (allow == 1) (void) system (cmd); else if (allow == 2) (void) system (safecmd); if (safecmd) free (safecmd); if (cmdname) free (cmdname); return allow; } #endif /* TeX */ #if ENABLE_PIPES /* Like runsystem(), the runpopen() function is called only when shellenabledp == 1. Unlike runsystem(), here we write errors to stderr, since we have nowhere better to use; and of course we return a file handle (or NULL) instead of a status indicator. */ static FILE * runpopen (char *cmd, const char *mode) { FILE *f = NULL; char *safecmd = NULL; char *cmdname = NULL; int allow; #ifdef WIN32 char *pp; for (pp = cmd; *pp; pp++) { if (*pp == '\'') *pp = '"'; } #endif /* If restrictedshell == 0, any command is allowed. */ if (restrictedshell == 0) allow = 1; else allow = shell_cmd_is_allowed (cmd, &safecmd, &cmdname); if (allow == 1) f = popen (cmd, mode); else if (allow == 2) f = popen (safecmd, mode); else if (allow == -1) fprintf (stderr, "\nrunpopen quotation error in command line: %s\n", cmd); else fprintf (stderr, "\nrunpopen command not allowed: %s\n", cmdname); if (safecmd) free (safecmd); if (cmdname) free (cmdname); return f; } #endif /* ENABLE_PIPES */ /* The main program, etc. */ #ifdef XeTeX #include "xetexdir/XeTeX_ext.h" #endif /* What we were invoked as and with. */ char **argv; int argc; /* If the user overrides argv[0] with -progname. */ static const_string user_progname; /* The C version of what might wind up in DUMP_VAR. */ static const_string dump_name; /* The C version of the jobname, if given. */ static const_string c_job_name; /* The filename for dynamic character translation, or NULL. */ string translate_filename; string default_translate_filename; #if defined(TeX) /* Needed for --src-specials option. */ static char *last_source_name; static int last_lineno; static boolean srcspecialsoption = false; static void parse_src_specials_option (const_string); #endif /* Parsing a first %&-line in the input file. */ static void parse_first_line (const_string); /* Parse option flags. */ static void parse_options (int, string *); /* Try to figure out if we have been given a filename. */ static string get_input_file_name (void); /* Get a true/false value for a variable from texmf.cnf and the environment. */ static boolean texmf_yesno(const_string var) { string value = kpse_var_value (var); return value && (*value == 't' || *value == 'y' || *value == '1'); } #ifdef pdfTeX const char *ptexbanner = BANNER; #endif #ifdef WIN32 static string normalize_quotes (const_string name, const_string mesg); #endif /* The entry point: set up for reading the command line, which will happen in `topenin', then call the main body. */ void maininit (int ac, string *av) { string main_input_file; /* Save to pass along to topenin. */ argc = ac; argv = av; /* Must be initialized before options are parsed. */ interactionoption = 4; /* Have things to record as we go along. */ kpse_record_input = recorder_record_input; kpse_record_output = recorder_record_output; #if defined(__SyncTeX__) /* 0 means "disable Synchronize TeXnology". synctexoption is a *.web variable. We initialize it to a weird value to catch the -synctex command line flag. At runtime, if synctexoption is not INT_MAX, then it contains the command line option provided; otherwise, no such option was given by the user. */ # define SYNCTEX_NO_OPTION INT_MAX synctexoption = SYNCTEX_NO_OPTION; #endif #if IS_pTeX kpse_set_program_name (argv[0], NULL); initkanji (); #endif /* If the user says --help or --version, we need to notice early. And since we want the --ini option, have to do it before getting into the web (which would read the base file, etc.). */ parse_options (ac, av); #if IS_pTeX /* In pTeX and friends, texmf.cnf is not recorded in the case of --recorder, because parse_options() is executed after the start of kpathsea due to special initializations. Therefore we record texmf.cnf here. */ if (recorder_enabled) { string p = kpse_find_file ("texmf.cnf", kpse_cnf_format, 0); if (p) recorder_record_input (p); } #endif /* If -progname was not specified, default to the dump name. */ if (!user_progname) user_progname = dump_name; /* Do this early so we can inspect kpse_invocation_name and kpse_program_name below, and because we have to do this before any path searching. */ #if IS_pTeX if (user_progname) kpse_reset_program_name (user_progname); #else kpse_set_program_name (argv[0], user_progname); #endif /* If the program name is "mf-nowin", then reset the name as "mf". */ if (strncasecmp (kpse_invocation_name, "mf-nowin", 8) == 0) kpse_reset_program_name ("mf"); /* FIXME: gather engine names in a single spot. */ xputenv ("engine", TEXMFENGINENAME); /* Were we given a simple filename? */ main_input_file = get_input_file_name(); #ifdef WIN32 if (main_input_file == NULL) { string name; boolean quoted; name = argv[argc-1]; if (name && name[0] != '-' && name[0] != '&' && name[0] != '\\') { if (strlen (name) > 2 && isalpha (name[0]) && name[1] == ':' && name[2] == '\\') { string pp; for (pp = name; *pp; pp++) { if (IS_KANJI (pp)) pp++; else if (*pp == '\\') *pp = '/'; } } #ifdef XeTeX name = normalize_quotes(argv[argc-1], "argument"); main_input_file = kpse_find_file(argv[argc-1], INPUT_FORMAT, false); argv[argc-1] = name; #else name = normalize_quotes(argv[argc-1], "argument"); quoted = (name[0] == '"'); if (quoted) { /* Overwrite last quote and skip first quote. */ name[strlen(name)-1] = '\0'; name++; } main_input_file = kpse_find_file(name, INPUT_FORMAT, false); if (quoted) { /* Undo modifications */ name[strlen(name)] = '"'; name--; } argv[argc-1] = name; #endif } } #endif /* Second chance to activate file:line:error style messages, this time from texmf.cnf. */ if (filelineerrorstylep < 0) { filelineerrorstylep = 0; } else if (!filelineerrorstylep) { filelineerrorstylep = texmf_yesno ("file_line_error_style"); } /* If no dump default yet, and we're not doing anything special on this run, we may want to look at the first line of the main input file for a %& specifier. */ if (parsefirstlinep < 0) { parsefirstlinep = 0; } else if (!parsefirstlinep) { parsefirstlinep = texmf_yesno ("parse_first_line"); } if (parsefirstlinep && (!dump_name || !translate_filename)) { parse_first_line (main_input_file); } /* Check whether there still is no translate_filename known. If so, use the default_translate_filename. */ /* FIXME: deprecated. */ if (!translate_filename) { translate_filename = default_translate_filename; } /* If we're preloaded, I guess everything is set up. I don't really know any more, it's been so long since anyone preloaded. */ if (readyalready != 314159) { /* The `ini_version' variable is declared/used in the change files. */ boolean virversion = false; if (FILESTRCASEEQ (kpse_program_name, INI_PROGRAM)) { iniversion = true; } else if (FILESTRCASEEQ (kpse_program_name, VIR_PROGRAM)) { virversion = true; #ifdef TeX } else if (FILESTRCASEEQ (kpse_program_name, "initex")) { iniversion = true; } else if (FILESTRCASEEQ (kpse_program_name, "virtex")) { virversion = true; #ifndef Aleph } else if (FILESTRCASEEQ (kpse_program_name, "mltex")) { mltexp = true; #endif /* !Aleph */ #endif /* TeX */ } if (!dump_name) { /* If called as *vir{mf,tex,mpost} use `plain'. Otherwise, use the name we were invoked under. */ dump_name = (virversion ? "plain" : kpse_program_name); } } #ifdef TeX /* Sanity check: -mltex, -enc, -etex only work in combination with -ini. */ if (!iniversion) { #if !defined(Aleph) if (mltexp) { fprintf(stderr, "-mltex only works with -ini\n"); } #if !defined(XeTeX) && !IS_pTeX if (enctexp) { fprintf(stderr, "-enc only works with -ini\n"); } #endif #endif #if IS_eTeX if (etexp) { fprintf(stderr, "-etex only works with -ini\n"); } #endif } #endif /* If we've set up the fmt/base default in any of the various ways above, also set its length. */ if (dump_name) { const_string with_ext = NULL; unsigned name_len = strlen (dump_name); unsigned ext_len = strlen (DUMP_EXT); /* Provide extension if not there already. */ if (name_len > ext_len && FILESTRCASEEQ (dump_name + name_len - ext_len, DUMP_EXT)) { with_ext = dump_name; } else { with_ext = concat (dump_name, DUMP_EXT); } DUMP_VAR = concat (" ", with_ext); /* adjust array for Pascal */ DUMP_LENGTH_VAR = strlen (DUMP_VAR + 1); } else { /* For dump_name to be NULL is a bug. */ abort(); } /* Additional initializations. No particular reason for doing them here instead of first thing in the change file; less symbols to propagate through Webc, that's all. */ #ifdef MF kpse_set_program_enabled (kpse_mf_format, MAKE_TEX_MF_BY_DEFAULT, kpse_src_compile); kpse_set_program_enabled (kpse_base_format, MAKE_TEX_FMT_BY_DEFAULT, kpse_src_compile); #endif /* MF */ #ifdef TeX #if defined (Aleph) kpse_set_program_enabled (kpse_ocp_format, MAKE_OMEGA_OCP_BY_DEFAULT, kpse_src_compile); kpse_set_program_enabled (kpse_ofm_format, MAKE_OMEGA_OFM_BY_DEFAULT, kpse_src_compile); kpse_set_program_enabled (kpse_tfm_format, false, kpse_src_compile); #else /* !Aleph */ kpse_set_program_enabled (kpse_tfm_format, MAKE_TEX_TFM_BY_DEFAULT, kpse_src_compile); #endif /* !Aleph */ kpse_set_program_enabled (kpse_tex_format, MAKE_TEX_TEX_BY_DEFAULT, kpse_src_compile); kpse_set_program_enabled (kpse_fmt_format, MAKE_TEX_FMT_BY_DEFAULT, kpse_src_compile); init_shell_escape (); if (!outputcomment) { outputcomment = kpse_var_value ("output_comment"); } #endif /* TeX */ } /* The entry point: set up for reading the command line, which will happen in `topenin', then call the main body. */ int #if defined(WIN32) && !defined(__MINGW32__) && defined(DLLPROC) DLLPROC (int ac, string *av) #else main (int ac, string *av) #endif { #ifdef __EMX__ _wildcard (&ac, &av); _response (&ac, &av); #endif #ifdef WIN32 _setmaxstdio(2048); setmode(fileno(stdin), _O_BINARY); #endif maininit (ac, av); /* Call the real main program. */ mainbody (); return EXIT_SUCCESS; } /* This is supposed to ``open the terminal for input'', but what we really do is copy command line arguments into TeX's or Metafont's buffer, so they can handle them. If nothing is available, or we've been called already (and hence, argc==0), we return with `last=first'. */ void topenin (void) { int i; #ifdef XeTeX static UFILE termin_file; if (termin == 0) { termin = &termin_file; termin->f = stdin; termin->savedChar = -1; termin->skipNextLF = 0; termin->encodingMode = UTF8; termin->conversionData = 0; inputfile[0] = termin; } #endif buffer[first] = 0; /* In case there are no arguments. */ if (optind < argc) { /* We have command line arguments. */ int k = first; for (i = optind; i < argc; i++) { #ifdef XeTeX unsigned char *ptr = (unsigned char *)&(argv[i][0]); /* need to interpret UTF8 from the command line */ UInt32 rval; while ((rval = *(ptr++)) != 0) { UInt16 extraBytes = bytesFromUTF8[rval]; switch (extraBytes) { /* note: code falls through cases! */ case 5: rval <<= 6; if (*ptr) rval += *(ptr++); case 4: rval <<= 6; if (*ptr) rval += *(ptr++); case 3: rval <<= 6; if (*ptr) rval += *(ptr++); case 2: rval <<= 6; if (*ptr) rval += *(ptr++); case 1: rval <<= 6; if (*ptr) rval += *(ptr++); case 0: ; }; rval -= offsetsFromUTF8[extraBytes]; buffer[k++] = rval; } #else char *ptr = &(argv[i][0]); /* Don't use strcat, since in Aleph the buffer elements aren't single bytes. */ while (*ptr) { buffer[k++] = *(ptr++); } #endif buffer[k++] = ' '; } argc = 0; /* Don't do this again. */ buffer[k] = 0; } /* Find the end of the buffer. */ for (last = first; buffer[last]; ++last) ; /* Make `last' be one past the last non-blank character in `buffer'. */ /* ??? The test for '\r' should not be necessary. */ for (--last; last >= first && ISBLANK (buffer[last]) && buffer[last] != '\r'; --last) ; last++; /* One more time, this time converting to TeX's internal character representation. */ #if !defined(Aleph) && !defined(XeTeX) for (i = first; i < last; i++) buffer[i] = xord[buffer[i]]; #endif } /* IPC for TeX. By Tom Rokicki for the NeXT; it makes TeX ship out the DVI file in a pipe to TeXView so that the output can be displayed incrementally. Shamim Mohamed adapted it for Web2c. */ #if defined (TeX) && defined (IPC) #ifdef WIN32 #undef _WINSOCKAPI_ #include #else #include #include #ifndef O_NONBLOCK /* POSIX */ #ifdef O_NDELAY /* BSD */ #define O_NONBLOCK O_NDELAY #elif defined(O_FNDELAY) /* NeXT */ #define O_NONBLOCK O_FNDELAY #else what the fcntl? cannot implement IPC without equivalent for O_NONBLOCK. #endif #endif /* no O_NONBLOCK */ #endif /* !WIN32 */ #ifdef WIN32 # define IPC_AF AF_INET # ifndef IPC_LOCAL_HOST # define IPC_LOCAL_HOST "127.0.0.1" # define FIXED_PORT (unsigned short)4242 # endif #else # define IPC_AF AF_UNIX # ifndef IPC_PIPE_NAME /* $HOME is prepended to this. */ # define IPC_PIPE_NAME "/.TeXview_Pipe" # endif #endif #ifndef IPC_SERVER_CMD /* Command to run to start the server. */ # ifdef WIN32 # define IPC_SERVER_CMD "texview.exe" # else # define IPC_SERVER_CMD "open `which TeXview`" # endif #endif struct msg { int namelength; /* length of auxiliary data */ int eof; /* new eof for dvi file */ #if 0 /* see usage of struct msg below */ char more_data[0]; /* where the rest of the stuff goes */ #endif }; static struct sockaddr *ipc_addr; static int ipc_addr_len; static int ipc_make_name (void) { if (ipc_addr_len == 0) { #ifdef WIN32 unsigned long remote_addr = inet_addr(IPC_LOCAL_HOST); if (remote_addr != INADDR_NONE) { struct sockaddr_in *ipc_sin_addr = xmalloc (sizeof (struct sockaddr_in)); ipc_sin_addr->sin_family = AF_INET; ipc_sin_addr->sin_addr.s_addr = remote_addr; ipc_sin_addr->sin_port = htons (FIXED_PORT); ipc_addr = ((struct sockaddr *) ipc_sin_addr); ipc_addr_len = sizeof(struct sockaddr_in); } #else string s = getenv ("HOME"); if (s) { char *ipc_name; ipc_addr = xmalloc (strlen (s) + 40); ipc_addr->sa_family = 0; ipc_name = ipc_addr->sa_data; strcpy (ipc_name, s); strcat (ipc_name, IPC_PIPE_NAME); ipc_addr_len = strlen (ipc_name) + 3; } #endif } return ipc_addr_len; } #ifndef INVALID_SOCKET # define INVALID_SOCKET (-1) #endif static int sock = INVALID_SOCKET; #ifdef WIN32 # define CLOSE_SOCKET(s) closesocket (s); WSACleanup () #else # define CLOSE_SOCKET(s) close (s) #endif static int ipc_is_open (void) { return sock != INVALID_SOCKET; } static void ipc_open_out (void) { #ifdef WIN32 struct WSAData wsaData; int nCode; unsigned long mode = 1; #endif #ifdef IPC_DEBUG fputs ("tex: Opening socket for IPC output ...\n", stderr); #endif if (sock != INVALID_SOCKET) { return; } #ifdef WIN32 if ((nCode = WSAStartup(MAKEWORD(1, 1), &wsaData)) != 0) { fprintf(stderr,"WSAStartup() returned error code %d.\n", nCode); return; } #endif if (ipc_make_name () <= 0) return; sock = socket (IPC_AF, SOCK_STREAM, 0); #ifdef IPC_DEBUG if(sock != INVALID_SOCKET) fprintf(stderr, "tex: Socket handle is %d\n", sock); else fprintf(stderr, "tex: Socket is invalid.\n"); #endif if (sock != INVALID_SOCKET) { if (connect (sock, ipc_addr, ipc_addr_len) != 0 || #ifdef WIN32 ioctlsocket (sock, FIONBIO, &mode) < 0 #else fcntl (sock, F_SETFL, O_NONBLOCK) < 0 #endif ) { CLOSE_SOCKET (sock); sock = INVALID_SOCKET; #ifdef IPC_DEBUG fputs ("tex: IPC socket cannot be connected.\n", stderr); fputs ("tex: Socket is closed.\n", stderr); #endif return; } #ifdef IPC_DEBUG fputs ("tex: Successfully opened IPC socket.\n", stderr); #endif } } static void ipc_close_out (void) { #ifdef IPC_DEBUG fputs ("tex: Closing output socket ...\n", stderr); #endif if (ipc_is_open ()) { CLOSE_SOCKET (sock); sock = INVALID_SOCKET; } } static void ipc_snd (int n, int is_eof, char *data) { struct { struct msg msg; char more_data[1024]; } ourmsg; if (!ipc_is_open ()) { return; } #ifdef IPC_DEBUG fprintf(stderr, "%d\t%d\n", ourmsg.msg.namelength, ourmsg.msg.eof); fputs ("tex: Sending message to socket ...\n", stderr); #endif ourmsg.msg.namelength = n; ourmsg.msg.eof = is_eof; if (n) { strcpy (ourmsg.more_data, data); } n += sizeof (struct msg); #ifdef IPC_DEBUG fprintf(stderr, "%d\t%d\n", ourmsg.msg.namelength, ourmsg.msg.eof); fputs ("tex: Writing to socket...\n", stderr); #endif #if defined(WIN32) if (send (sock, (char *)&ourmsg, n, 0) != n) { #else if (write (sock, &ourmsg, n) != n) { #endif ipc_close_out (); } #ifdef IPC_DEBUG fputs ("tex: IPC message sent.\n", stderr); #endif } /* This routine notifies the server if there is an eof, or the filename if a new DVI file is starting. This is the routine called by TeX. Aleph defines str_start(#) as str_start_ar[# - too_big_char], with too_big_char = biggest_char + 1 = 65536 (omstr.ch). */ void ipcpage (int is_eof) { static boolean begun = false; unsigned len = 0; string p = NULL; if (!begun) { string name; /* Just the filename. */ string cwd = xgetcwd (); ipc_open_out (); #if !defined(Aleph) len = strstart[outputfilename + 1] - strstart[outputfilename]; #else len = strstartar[outputfilename + 1 - 65536L] - strstartar[outputfilename - 65536L]; #endif name = xmalloc (len + 1); #if !defined(Aleph) strncpy (name, (string)&strpool[strstart[outputfilename]], len); #else { unsigned i; for (i=0; i upb) { fprintf (stderr, "%s:%d: Destination charcode %d <0 or >%d.\n", translate_filename, line_count, num, upb); num = -1; } return num; } /* Update the xchr, xord, and xprn arrays for TeX, allowing a translation table specified at runtime via an external file. Look for the character translation file FNAME along the same path as tex.pool. If no suffix in FNAME, use .tcx (don't bother trying to support extension-less names for these files). */ /* FIXME: A new format ought to be introduced for these files. */ void readtcxfile (void) { string orig_filename; if (!find_suffix (translate_filename)) { translate_filename = concat (translate_filename, ".tcx"); } orig_filename = translate_filename; translate_filename = kpse_find_file (translate_filename, kpse_web2c_format, true); if (translate_filename) { string line; unsigned line_count = 0; FILE *translate_file = xfopen (translate_filename, FOPEN_R_MODE); while ((line = read_line (translate_file))) { int first; string start2; string comment_loc = strchr (line, '%'); if (comment_loc) *comment_loc = 0; line_count++; first = tcx_get_num (255, line_count, line, &start2); if (first >= 0) { string start3; int second; int printable; second = tcx_get_num (255, line_count, start2, &start3); if (second >= 0) { /* I suppose we could check for nonempty junk following the "printable" code, but let's not bother. */ string extra; /* If they mention a second code, make that the internal number. */ xord[first] = second; xchr[second] = first; printable = tcx_get_num (1, line_count, start3, &extra); /* Not-a-number, may be a comment. */ if (printable == -1) printable = 1; /* Don't allow the 7bit ASCII set to become unprintable. */ if (32 <= second && second <= 126) printable = 1; } else { second = first; /* else make internal the same as external */ /* If they mention a charcode, call it printable. */ printable = 1; } xprn[second] = printable; } free (line); } xfclose(translate_file, translate_filename); } else { WARNING1 ("Could not open char translation file `%s'", orig_filename); } } #endif /* !Aleph && !XeTeX */ #endif /* TeX || MF [character translation] */ #ifdef XeTeX /* XeTeX handles this differently, and allows odd quotes within names */ static string normalize_quotes (const_string name, const_string mesg) { int quote_char = 0; boolean must_quote = false; int len = strlen(name); /* Leave room for quotes and NUL. */ string ret; string p; const_string q; for (q = name; *q; q++) { if (*q == ' ') { if (!must_quote) { len += 2; must_quote = true; } } else if (*q == '\"' || *q == '\'') { must_quote = true; if (quote_char == 0) quote_char = '\"' + '\'' - *q; len += 2; /* this could sometimes add length we don't need */ } } ret = xmalloc(len + 1); p = ret; if (must_quote) { if (quote_char == 0) quote_char = '\"'; *p++ = quote_char; } for (q = name; *q; q++) { if (*q == quote_char) { *p++ = quote_char; quote_char = '\"' + '\'' - quote_char; *p++ = quote_char; } *p++ = *q; } if (quote_char != 0) *p++ = quote_char; *p = '\0'; return ret; } #else /* Normalize quoting of filename -- that is, only quote if there is a space, and always use the quote-name-quote style. */ static string normalize_quotes (const_string name, const_string mesg) { boolean quoted = false; boolean must_quote = (strchr(name, ' ') != NULL); /* Leave room for quotes and NUL. */ string ret = xmalloc(strlen(name)+3); string p; const_string q; p = ret; if (must_quote) *p++ = '"'; for (q = name; *q; q++) { if (*q == '"') quoted = !quoted; else *p++ = *q; } if (must_quote) *p++ = '"'; *p = '\0'; if (quoted) { fprintf(stderr, "! Unbalanced quotes in %s %s\n", mesg, name); uexit(1); } return ret; } #endif /* Getting the input filename. */ string get_input_file_name (void) { string input_file_name = NULL; if (argv[optind] && argv[optind][0] != '&' && argv[optind][0] != '\\') { /* Not &format, not \input, so assume simple filename. */ string name; #ifndef XeTeX boolean quoted; #endif #ifdef WIN32 if (strlen (argv[optind]) > 2 && isalpha (argv[optind][0]) && argv[optind][1] == ':' && argv[optind][2] == '\\') { char *pp; for (pp = argv[optind]; *pp; pp++) { if (*pp == '\\') *pp = '/'; else if (IS_KANJI(pp)) pp++; } } #endif name = normalize_quotes(argv[optind], "argument"); #ifdef XeTeX input_file_name = kpse_find_file(argv[optind], INPUT_FORMAT, false); #else quoted = (name[0] == '"'); if (quoted) { /* Overwrite last quote and skip first quote. */ name[strlen(name)-1] = '\0'; name++; } input_file_name = kpse_find_file(name, INPUT_FORMAT, false); if (quoted) { /* Undo modifications */ name[strlen(name)] = '"'; name--; } #endif argv[optind] = name; } return input_file_name; } /* Reading the options. */ /* Test whether getopt found an option ``A''. Assumes the option index is in the variable `option_index', and the option table in a variable `long_options'. */ #define ARGUMENT_IS(a) STREQ (long_options[option_index].name, a) /* SunOS cc can't initialize automatic structs, so make this static. */ static struct option long_options[] = { { DUMP_OPTION, 1, 0, 0 }, #ifdef TeX /* FIXME: Obsolete -- for backward compatibility only. */ { "efmt", 1, 0, 0 }, #endif { "help", 0, 0, 0 }, { "ini", 0, &iniversion, 1 }, { "interaction", 1, 0, 0 }, { "halt-on-error", 0, &haltonerrorp, 1 }, { "kpathsea-debug", 1, 0, 0 }, { "progname", 1, 0, 0 }, { "version", 0, 0, 0 }, { "recorder", 0, &recorder_enabled, 1 }, #ifdef TeX #ifdef IPC { "ipc", 0, &ipcon, 1 }, { "ipc-start", 0, &ipcon, 2 }, #endif /* IPC */ #if !defined(Aleph) { "mltex", 0, &mltexp, 1 }, #if !defined(XeTeX) && !IS_pTeX { "enc", 0, &enctexp, 1 }, #endif #endif /* !Aleph */ #if IS_eTeX { "etex", 0, &etexp, 1 }, #endif { "output-comment", 1, 0, 0 }, #if defined(pdfTeX) { "draftmode", 0, 0, 0 }, { "output-format", 1, 0, 0 }, #endif /* pdfTeX */ { "shell-escape", 0, &shellenabledp, 1 }, { "no-shell-escape", 0, &shellenabledp, -1 }, { "enable-write18", 0, &shellenabledp, 1 }, { "disable-write18", 0, &shellenabledp, -1 }, { "shell-restricted", 0, 0, 0 }, { "debug-format", 0, &debugformatfile, 1 }, { "src-specials", 2, 0, 0 }, #if defined(__SyncTeX__) /* Synchronization: just like "interaction" above */ { "synctex", 1, 0, 0 }, #endif #endif /* TeX */ #if defined (TeX) || defined (MF) { "file-line-error-style", 0, &filelineerrorstylep, 1 }, { "no-file-line-error-style", 0, &filelineerrorstylep, -1 }, /* Shorter option names for the above. */ { "file-line-error", 0, &filelineerrorstylep, 1 }, { "no-file-line-error", 0, &filelineerrorstylep, -1 }, { "jobname", 1, 0, 0 }, { "output-directory", 1, 0, 0 }, { "parse-first-line", 0, &parsefirstlinep, 1 }, { "no-parse-first-line", 0, &parsefirstlinep, -1 }, #if !defined(Aleph) { "translate-file", 1, 0, 0 }, { "default-translate-file", 1, 0, 0 }, { "8bit", 0, &eightbitp, 1 }, #endif /* !Aleph */ #if defined(XeTeX) { "no-pdf", 0, &nopdfoutput, 1 }, { "output-driver", 1, 0, 0 }, { "papersize", 1, 0, 0 }, #endif /* XeTeX */ { "mktex", 1, 0, 0 }, { "no-mktex", 1, 0, 0 }, #endif /* TeX or MF */ #if IS_pTeX #ifdef WIN32 { "sjis-terminal", 0, &sjisterminal, 1 }, { "guess-input-enc", 0, &infile_enc_auto, 1 }, { "no-guess-input-enc", 0, &infile_enc_auto, 0 }, #endif { "kanji", 1, 0, 0 }, { "kanji-internal", 1, 0, 0 }, #endif /* IS_pTeX */ { 0, 0, 0, 0 } }; static void parse_options (int argc, string *argv) { int g; /* `getopt' return code. */ int option_index; for (;;) { g = getopt_long_only (argc, argv, "+", long_options, &option_index); if (g == -1) /* End of arguments, exit the loop. */ break; if (g == '?') { /* Unknown option. */ /* FIXME: usage (argv[0]); replaced by continue. */ continue; } assert (g == 0); /* We have no short option names. */ if (ARGUMENT_IS ("kpathsea-debug")) { kpathsea_debug |= atoi (optarg); #ifdef XeTeX } else if (ARGUMENT_IS ("papersize")) { papersize = optarg; } else if (ARGUMENT_IS ("output-driver")) { outputdriver = optarg; #endif } else if (ARGUMENT_IS ("progname")) { user_progname = optarg; } else if (ARGUMENT_IS ("jobname")) { #ifdef XeTeX c_job_name = optarg; #else c_job_name = normalize_quotes (optarg, "jobname"); #endif } else if (ARGUMENT_IS (DUMP_OPTION)) { dump_name = optarg; dumpoption = true; #ifdef TeX /* FIXME: Obsolete -- for backward compatibility only. */ } else if (ARGUMENT_IS ("efmt")) { dump_name = optarg; dumpoption = true; #endif } else if (ARGUMENT_IS ("output-directory")) { output_directory = optarg; #ifdef TeX } else if (ARGUMENT_IS ("output-comment")) { unsigned len = strlen (optarg); if (len < 256) { outputcomment = optarg; } else { WARNING2 ("Comment truncated to 255 characters from %d. (%s)", len, optarg); outputcomment = xmalloc (256); strncpy (outputcomment, optarg, 255); outputcomment[255] = 0; } #ifdef IPC } else if (ARGUMENT_IS ("ipc-start")) { ipc_open_out (); /* Try to start up the other end if it's not already. */ if (!ipc_is_open ()) { #ifdef WIN32 if (spawnlp (_P_NOWAIT, IPC_SERVER_CMD, IPC_SERVER_CMD, NULL) != -1) { #else if (system (IPC_SERVER_CMD) == 0) { #endif unsigned i; for (i = 0; i < 20 && !ipc_is_open (); i++) { #ifdef WIN32 Sleep (100); /* 2000ms is too long for a simple w32 example */ #else sleep (2); #endif ipc_open_out (); } } } #endif /* IPC */ } else if (ARGUMENT_IS ("shell-restricted")) { shellenabledp = 1; restrictedshell = 1; } else if (ARGUMENT_IS ("src-specials")) { last_source_name = xstrdup(""); /* Option `--src" without any value means `auto' mode. */ if (optarg == NULL) { insertsrcspecialeverypar = true; insertsrcspecialauto = true; srcspecialsoption = true; srcspecialsp = true; } else { parse_src_specials_option(optarg); } #endif /* TeX */ #if defined(pdfTeX) } else if (ARGUMENT_IS ("output-format")) { pdfoutputoption = 1; if (strcmp(optarg, "dvi") == 0) { pdfoutputvalue = 0; } else if (strcmp(optarg, "pdf") == 0) { pdfoutputvalue = 2; } else { WARNING1 ("Ignoring unknown value `%s' for --output-format", optarg); pdfoutputoption = 0; } } else if (ARGUMENT_IS ("draftmode")) { pdfdraftmodeoption = 1; pdfdraftmodevalue = 1; #endif /* pdfTeX */ #if defined (TeX) || defined (MF) #if !defined(Aleph) } else if (ARGUMENT_IS ("translate-file")) { translate_filename = optarg; } else if (ARGUMENT_IS ("default-translate-file")) { default_translate_filename = optarg; #endif /* !Aleph */ } else if (ARGUMENT_IS ("mktex")) { kpse_maketex_option (optarg, true); } else if (ARGUMENT_IS ("no-mktex")) { kpse_maketex_option (optarg, false); #endif /* TeX or MF */ } else if (ARGUMENT_IS ("interaction")) { /* These numbers match @d's in *.ch */ if (STREQ (optarg, "batchmode")) { interactionoption = 0; } else if (STREQ (optarg, "nonstopmode")) { interactionoption = 1; } else if (STREQ (optarg, "scrollmode")) { interactionoption = 2; } else if (STREQ (optarg, "errorstopmode")) { interactionoption = 3; } else { WARNING1 ("Ignoring unknown argument `%s' to --interaction", optarg); } #if IS_pTeX } else if (ARGUMENT_IS ("kanji")) { if (!set_enc_string (optarg, NULL)) { WARNING1 ("Ignoring unknown argument `%s' to --kanji", optarg); } } else if (ARGUMENT_IS ("kanji-internal")) { if (!set_enc_string (NULL, optarg)) { WARNING1 ("Ignoring unknown argument `%s' to --kanji-internal", optarg); } #endif } else if (ARGUMENT_IS ("help")) { usagehelp (PROGRAM_HELP, BUG_ADDRESS); #if defined(__SyncTeX__) } else if (ARGUMENT_IS ("synctex")) { /* Synchronize TeXnology: catching the command line option as a long */ synctexoption = (int) strtol(optarg, NULL, 0); #endif } else if (ARGUMENT_IS ("version")) { char *versions; #if defined (pdfTeX) || defined(XeTeX) initversionstring(&versions); #else versions = NULL; #endif printversionandexit (BANNER, COPYRIGHT_HOLDER, AUTHOR, versions); } /* Else it was a flag; getopt has already done the assignment. */ } } #if defined(TeX) void parse_src_specials_option (const_string opt_list) { char * toklist = xstrdup(opt_list); char * tok; insertsrcspecialauto = false; tok = strtok (toklist, ", "); while (tok) { if (strcmp (tok, "everypar") == 0 || strcmp (tok, "par") == 0 || strcmp (tok, "auto") == 0) { insertsrcspecialauto = true; insertsrcspecialeverypar = true; } else if (strcmp (tok, "everyparend") == 0 || strcmp (tok, "parend") == 0) insertsrcspecialeveryparend = true; else if (strcmp (tok, "everycr") == 0 || strcmp (tok, "cr") == 0) insertsrcspecialeverycr = true; else if (strcmp (tok, "everymath") == 0 || strcmp (tok, "math") == 0) insertsrcspecialeverymath = true; else if (strcmp (tok, "everyhbox") == 0 || strcmp (tok, "hbox") == 0) insertsrcspecialeveryhbox = true; else if (strcmp (tok, "everyvbox") == 0 || strcmp (tok, "vbox") == 0) insertsrcspecialeveryvbox = true; else if (strcmp (tok, "everydisplay") == 0 || strcmp (tok, "display") == 0) insertsrcspecialeverydisplay = true; else if (strcmp (tok, "none") == 0) { /* This one allows to reset an option that could appear in texmf.cnf */ insertsrcspecialauto = insertsrcspecialeverypar = insertsrcspecialeveryparend = insertsrcspecialeverycr = insertsrcspecialeverymath = insertsrcspecialeveryhbox = insertsrcspecialeveryvbox = insertsrcspecialeverydisplay = false; } else { WARNING1 ("Ignoring unknown argument `%s' to --src-specials", tok); } tok = strtok(0, ", "); } free(toklist); srcspecialsp=insertsrcspecialauto | insertsrcspecialeverypar | insertsrcspecialeveryparend | insertsrcspecialeverycr | insertsrcspecialeverymath | insertsrcspecialeveryhbox | insertsrcspecialeveryvbox | insertsrcspecialeverydisplay; srcspecialsoption = true; } #endif /* If the first thing on the command line (we use the globals `argv' and `optind') is a normal filename (i.e., does not start with `&' or `\'), and if we can open it, and if its first line is %&FORMAT, and FORMAT is a readable dump file, then set DUMP_VAR to FORMAT. Also call kpse_reset_program_name to ensure the correct paths for the format are used. */ static void parse_first_line (const_string filename) { FILE *f = filename ? fopen (filename, FOPEN_R_MODE) : NULL; if (f) { string first_line = read_line (f); xfclose (f, filename); /* We deal with the general format "%&fmt --translate-file=tcx" */ /* The idea of using this format came from Wlodzimierz Bzyl */ if (first_line && first_line[0] == '%' && first_line[1] == '&') { /* Parse the first line into at most three space-separated parts. */ char *s; char *part[4]; int npart; char **parse; for (s = first_line+2; ISBLANK(*s); ++s) ; npart = 0; while (*s && npart != 3) { part[npart++] = s; while (*s && *s != ' ') s++; while (*s == ' ') *s++ = '\0'; } part[npart] = NULL; parse = part; /* Look at what we've got. Very crude! */ if (*parse && **parse != '-') { /* A format name */ if (dump_name) { /* format already determined, do nothing. */ } else { string f_name = concat (part[0], DUMP_EXT); string d_name = kpse_find_file (f_name, DUMP_FORMAT, false); if (d_name && kpse_readable_file (d_name)) { dump_name = xstrdup (part[0]); kpse_reset_program_name (dump_name); /* Tell TeX/MF/MP we have a %&name line... */ dumpline = true; } free (f_name); } parse++; } /* The tcx stuff, if any. Should we support the -translate-file form as well as --translate-file? */ if (*parse) { s = NULL; if (translate_filename) { /* TCX file already set, do nothing. */ } else if (STREQ (*parse, "--translate-file")) { s = *(parse+1); } else if (STREQ (*parse, "-translate-file")) { s = *(parse+1); } else if (STRNEQ (*parse, "--translate-file=", 17)) { s = *parse+17; } else if (STRNEQ (*parse, "-translate-file=", 16)) { s = *parse+16; } /* Just set the name, no sanity checks here. */ /* FIXME: remove trailing spaces. */ if (s && *s) { translate_filename = xstrdup(s); } } } if (first_line) free (first_line); } } /* piped I/O */ /* The code that implements popen() needs an array for tracking possible pipe file pointers, because these need to be closed using pclose(). */ #if ENABLE_PIPES #define NUM_PIPES 16 static FILE *pipes [NUM_PIPES]; boolean open_in_or_pipe (FILE **f_ptr, int filefmt, const_string fopen_mode) { string fname = NULL; int i; /* iterator */ /* opening a read pipe is straightforward, only have to skip past the pipe symbol in the file name. filename quoting is assumed to happen elsewhere (it does :-)) */ if (shellenabledp && *(nameoffile+1) == '|') { /* the user requested a pipe */ *f_ptr = NULL; fname = xmalloc(strlen((const_string)(nameoffile+1))+1); strcpy(fname,(const_string)(nameoffile+1)); recorder_record_input (fname + 1); *f_ptr = runpopen(fname+1,"r"); free(fname); for (i=0; iencodingMode = (mode == AUTO) ? UTF8 : mode; (*f)->conversionData = 0; (*f)->savedChar = -1; (*f)->skipNextLF = 0; (*f)->f = NULL; fname = xmalloc(strlen((const_string)(nameoffile+1))+1); strcpy(fname,(const_string)(nameoffile+1)); recorder_record_input (fname + 1); (*f)->f = runpopen(fname+1,"r"); free(fname); for (i=0; if; break; } } if ((*f)->f) setvbuf ((*f)->f,NULL,_IONBF,0); #ifdef WIN32 Poptr = (*f)->f; #endif return (*f)->f != NULL; } return u_open_in(f, filefmt, fopen_mode, mode, encodingData); } #endif boolean open_out_or_pipe (FILE **f_ptr, const_string fopen_mode) { string fname; int i; /* iterator */ /* opening a write pipe takes a little bit more work, because TeX will perhaps have appended ".tex". To avoid user confusion as much as possible, this extension is stripped only when the command is a bare word. Some small string trickery is needed to make sure the correct number of bytes is free()-d afterwards */ if (shellenabledp && *(nameoffile+1) == '|') { /* the user requested a pipe */ fname = xmalloc(strlen((const_string)(nameoffile+1))+1); strcpy(fname,(const_string)(nameoffile+1)); if (strchr (fname,' ')==NULL && strchr(fname,'>')==NULL) { /* mp and mf currently do not use this code, but it is better to be prepared */ if (STREQ((fname+strlen(fname)-4),".tex")) *(fname+strlen(fname)-4) = 0; *f_ptr = runpopen(fname+1,"w"); *(fname+strlen(fname)) = '.'; } else { *f_ptr = runpopen(fname+1,"w"); } recorder_record_output (fname + 1); free(fname); for (i=0; itm_hour * 60 + tmptr->tm_min; *day = tmptr->tm_mday; *month = tmptr->tm_mon + 1; *year = tmptr->tm_year + 1900; { #ifdef SA_INTERRUPT /* Under SunOS 4.1.x, the default action after return from the signal handler is to restart the I/O if nothing has been transferred. The effect on TeX is that interrupts are ignored if we are waiting for input. The following tells the system to return EINTR from read() in this case. From ken@cs.toronto.edu. */ struct sigaction a, oa; a.sa_handler = catch_interrupt; sigemptyset (&a.sa_mask); sigaddset (&a.sa_mask, SIGINT); a.sa_flags = SA_INTERRUPT; sigaction (SIGINT, &a, &oa); if (oa.sa_handler != SIG_DFL) sigaction (SIGINT, &oa, (struct sigaction *) 0); #else /* no SA_INTERRUPT */ #ifdef WIN32 SetConsoleCtrlHandler(catch_interrupt, TRUE); #else /* not WIN32 */ RETSIGTYPE (*old_handler)(int); old_handler = signal (SIGINT, catch_interrupt); if (old_handler != SIG_DFL) signal (SIGINT, old_handler); #endif /* not WIN32 */ #endif /* no SA_INTERRUPT */ } } #if defined(pdfTeX) /* Getting a high resolution time. */ void get_seconds_and_micros (integer *seconds, integer *micros) { #if defined (HAVE_GETTIMEOFDAY) struct timeval tv; gettimeofday(&tv, NULL); *seconds = tv.tv_sec; *micros = tv.tv_usec; #elif defined (HAVE_FTIME) struct timeb tb; ftime(&tb); *seconds = tb.time; *micros = tb.millitm*1000; #else time_t myclock = time((time_t*)NULL); *seconds = myclock; *micros = 0; #endif } #endif /* Read a line of input as efficiently as possible while still looking like Pascal. We set `last' to `first' and return `false' if we get to eof. Otherwise, we return `true' and set last = first + length(line except trailing whitespace). */ #ifndef XeTeX /* for XeTeX, we have a replacement function in XeTeX_ext.c */ boolean input_line (FILE *f) { int i = EOF; /* Recognize either LF or CR as a line terminator. */ #if IS_pTeX last = input_line2(f, (unsigned char *)buffer, first, bufsize, &i); #else #ifdef WIN32 if (f != Poptr && fileno (f) != fileno (stdin)) { long position = ftell (f); if (position == 0L) { /* Detect and skip Byte order marks. */ int k1 = getc (f); if (k1 != 0xff && k1 != 0xfe && k1 != 0xef) rewind (f); else { int k2 = getc (f); if (k2 != 0xff && k2 != 0xfe && k2 != 0xbb) rewind (f); else if ((k1 == 0xff && k2 == 0xfe) || /* UTF-16(LE) */ (k1 == 0xfe && k2 == 0xff)) /* UTF-16(BE) */ ; else { int k3 = getc (f); if (k1 == 0xef && k2 == 0xbb && k3 == 0xbf) /* UTF-8 */ ; else rewind (f); } } } } #endif last = first; while (last < bufsize && (i = getc (f)) != EOF && i != '\n' && i != '\r') buffer[last++] = i; #endif if (i == EOF && errno != EINTR && last == first) return false; /* We didn't get the whole line because our buffer was too small. */ if (i != EOF && i != '\n' && i != '\r') { fprintf (stderr, "! Unable to read an entire line---bufsize=%u.\n", (unsigned) bufsize); fputs ("Please increase buf_size in texmf.cnf.\n", stderr); uexit (1); } buffer[last] = ' '; if (last >= maxbufstack) maxbufstack = last; /* If next char is LF of a CRLF, read it. */ if (i == '\r') { while ((i = getc (f)) == EOF && errno == EINTR) ; if (i != '\n') ungetc (i, f); } /* Trim trailing whitespace. */ while (last > first && ISBLANK (buffer[last - 1])) --last; /* Don't bother using xord if we don't need to. */ #if !defined(Aleph) for (i = first; i <= last; i++) buffer[i] = xord[buffer[i]]; #endif #if IS_pTeX for (i = last+1; (i < last + 5 && i < bufsize) ; i++) buffer[i] = '\0'; #endif return true; } #endif /* !XeTeX */ /* This string specifies what the `e' option does in response to an error message. */ static const_string edit_value = EDITOR; /* This procedure originally due to sjc@s1-c. TeX & Metafont call it when the user types `e' in response to an error, invoking a text editor on the erroneous source file. FNSTART is how far into FILENAME the actual filename starts; FNLENGTH is how long the filename is. */ void calledit (packedASCIIcode *filename, poolpointer fnstart, integer fnlength, integer linenumber) { char *temp, *command, *fullcmd; char c; int sdone, ddone, i; #ifdef WIN32 char *fp, *ffp, *env, editorname[256], buffer[256]; int cnt = 0; int dontchange = 0; #endif sdone = ddone = 0; filename += fnstart; /* Close any open input files, since we're going to kill the job. */ for (i = 1; i <= inopen; i++) #ifdef XeTeX xfclose (inputfile[i]->f, "inputfile"); #else xfclose (inputfile[i], "inputfile"); #endif /* Replace the default with the value of the appropriate environment variable or config file value, if it's set. */ temp = kpse_var_value (edit_var); if (temp != NULL) edit_value = temp; /* Construct the command string. The `11' is the maximum length an integer might be. */ command = xmalloc (strlen (edit_value) + fnlength + 11); /* So we can construct it as we go. */ temp = command; #ifdef WIN32 fp = editorname; if ((isalpha(*edit_value) && *(edit_value + 1) == ':' && IS_DIR_SEP (*(edit_value + 2))) || (*edit_value == '"' && isalpha(*(edit_value + 1)) && *(edit_value + 2) == ':' && IS_DIR_SEP (*(edit_value + 3))) ) dontchange = 1; #endif while ((c = *edit_value++) != 0) { if (c == '%') { switch (c = *edit_value++) { case 'd': if (ddone) FATAL ("call_edit: `%%d' appears twice in editor command"); sprintf (temp, "%ld", (long int)linenumber); while (*temp != '\0') temp++; ddone = 1; break; case 's': if (sdone) FATAL ("call_edit: `%%s' appears twice in editor command"); for (i =0; i < fnlength; i++) *temp++ = Xchr (filename[i]); sdone = 1; break; case '\0': *temp++ = '%'; /* Back up to the null to force termination. */ edit_value--; break; default: *temp++ = '%'; *temp++ = c; break; } } else { #ifdef WIN32 if (dontchange) *temp++ = c; else { if(Isspace(c) && cnt == 0) { cnt++; temp = command; *temp++ = c; *fp = '\0'; } else if(!Isspace(c) && cnt == 0) { *fp++ = c; } else { *temp++ = c; } } #else *temp++ = c; #endif } } *temp = 0; #ifdef WIN32 if (dontchange == 0) { if(editorname[0] == '.' || editorname[0] == '/' || editorname[0] == '\\') { fprintf(stderr, "%s is not allowed to execute.\n", editorname); uexit(1); } env = (char *)getenv("PATH"); if(SearchPath(env, editorname, ".exe", 256, buffer, &ffp)==0) { if(SearchPath(env, editorname, ".bat", 256, buffer, &ffp)==0) { fprintf(stderr, "I cannot find %s in the PATH.\n", editorname); uexit(1); } } fullcmd = (char *)xmalloc(strlen(buffer)+strlen(command)+5); strcpy(fullcmd, "\""); strcat(fullcmd, buffer); strcat(fullcmd, "\""); strcat(fullcmd, command); } else #endif fullcmd = command; /* Execute the command. */ if (system (fullcmd) != 0) fprintf (stderr, "! Trouble executing `%s'.\n", command); /* Quit, since we found an error. */ uexit (1); } /* Read and write dump files. As distributed, these files are architecture dependent; specifically, BigEndian and LittleEndian architectures produce different files. These routines always output BigEndian files. This still does not guarantee them to be architecture-independent, because it is possible to make a format that dumps a glue ratio, i.e., a floating-point number. Fortunately, none of the standard formats do that. */ #if !defined (WORDS_BIGENDIAN) && !defined (NO_DUMP_SHARE) /* this fn */ /* This macro is always invoked as a statement. It assumes a variable `temp'. */ #define SWAP(x, y) temp = (x); (x) = (y); (y) = temp /* Make the NITEMS items pointed at by P, each of size SIZE, be the opposite-endianness of whatever they are now. */ static void swap_items (char *p, int nitems, int size) { char temp; /* Since `size' does not change, we can write a while loop for each case, and avoid testing `size' for each time. */ switch (size) { /* 16-byte items happen on the DEC Alpha machine when we are not doing sharable memory dumps. */ case 16: while (nitems--) { SWAP (p[0], p[15]); SWAP (p[1], p[14]); SWAP (p[2], p[13]); SWAP (p[3], p[12]); SWAP (p[4], p[11]); SWAP (p[5], p[10]); SWAP (p[6], p[9]); SWAP (p[7], p[8]); p += size; } break; case 8: while (nitems--) { SWAP (p[0], p[7]); SWAP (p[1], p[6]); SWAP (p[2], p[5]); SWAP (p[3], p[4]); p += size; } break; case 4: while (nitems--) { SWAP (p[0], p[3]); SWAP (p[1], p[2]); p += size; } break; case 2: while (nitems--) { SWAP (p[0], p[1]); p += size; } break; case 1: /* Nothing to do. */ break; default: FATAL1 ("Can't swap a %d-byte item for (un)dumping", size); } } #endif /* not WORDS_BIGENDIAN and not NO_DUMP_SHARE */ /* Here we write NITEMS items, each item being ITEM_SIZE bytes long. The pointer to the stuff to write is P, and we write to the file OUT_FILE. */ void #ifdef XeTeX do_dump (char *p, int item_size, int nitems, gzFile out_file) #else do_dump (char *p, int item_size, int nitems, FILE *out_file) #endif { #if !defined (WORDS_BIGENDIAN) && !defined (NO_DUMP_SHARE) swap_items (p, nitems, item_size); #endif #ifdef XeTeX if (gzwrite (out_file, p, item_size * nitems) != item_size * nitems) #else if (fwrite (p, item_size, nitems, out_file) != nitems) #endif { fprintf (stderr, "! Could not write %d %d-byte item(s) to %s.\n", nitems, item_size, nameoffile+1); uexit (1); } /* Have to restore the old contents of memory, since some of it might get used again. */ #if !defined (WORDS_BIGENDIAN) && !defined (NO_DUMP_SHARE) swap_items (p, nitems, item_size); #endif } /* Here is the dual of the writing routine. */ void #ifdef XeTeX do_undump (char *p, int item_size, int nitems, gzFile in_file) #else do_undump (char *p, int item_size, int nitems, FILE *in_file) #endif { #ifdef XeTeX if (gzread (in_file, p, item_size * nitems) != item_size * nitems) #else if (fread (p, item_size, nitems, in_file) != (size_t) nitems) #endif FATAL3 ("Could not undump %d %d-byte item(s) from %s", nitems, item_size, nameoffile+1); #if !defined (WORDS_BIGENDIAN) && !defined (NO_DUMP_SHARE) swap_items (p, nitems, item_size); #endif } /* FIXME -- some (most?) of this can/should be moved to the Pascal/WEB side. */ #if defined(TeX) || defined(MF) #if !defined(pdfTeX) static void checkpoolpointer (poolpointer poolptr, size_t len) { if (poolptr + len >= poolsize) { fprintf (stderr, "\nstring pool overflow [%i bytes]\n", (int)poolsize); /* fixme */ exit(1); } } #ifndef XeTeX /* XeTeX uses this from XeTeX_ext.c */ static #endif int maketexstring(const_string s) { size_t len; #ifdef XeTeX UInt32 rval; const unsigned char *cp = (const unsigned char *)s; #endif assert (s != 0); len = strlen(s); checkpoolpointer (poolptr, len); /* in the XeTeX case, this may be more than enough */ #ifdef XeTeX while ((rval = *(cp++)) != 0) { UInt16 extraBytes = bytesFromUTF8[rval]; switch (extraBytes) { /* note: code falls through cases! */ case 5: rval <<= 6; if (*cp) rval += *(cp++); case 4: rval <<= 6; if (*cp) rval += *(cp++); case 3: rval <<= 6; if (*cp) rval += *(cp++); case 2: rval <<= 6; if (*cp) rval += *(cp++); case 1: rval <<= 6; if (*cp) rval += *(cp++); case 0: ; }; rval -= offsetsFromUTF8[extraBytes]; if (rval > 0xffff) { rval -= 0x10000; strpool[poolptr++] = 0xd800 + rval / 0x0400; strpool[poolptr++] = 0xdc00 + rval % 0x0400; } else strpool[poolptr++] = rval; } #else /* ! XeTeX */ while (len-- > 0) strpool[poolptr++] = *s++; #endif /* ! XeTeX */ return makestring(); } #endif /* !pdfTeX */ strnumber makefullnamestring(void) { return maketexstring(fullnameoffile); } /* Get the job name to be used, which may have been set from the command line. */ strnumber getjobname(strnumber name) { strnumber ret = name; if (c_job_name != NULL) ret = maketexstring(c_job_name); return ret; } #endif #if defined(TeX) static int compare_paths (const_string p1, const_string p2) { int ret; while ( #ifdef MONOCASE_FILENAMES (((ret = (toupper(*p1) - toupper(*p2))) == 0) && (*p2 != 0)) #else (((ret = (*p1 - *p2)) == 0) && (*p2 != 0)) #endif || (IS_DIR_SEP(*p1) && IS_DIR_SEP(*p2))) { p1++, p2++; } ret = (ret < 0 ? -1 : (ret > 0 ? 1 : 0)); return ret; } #ifdef XeTeX /* the string pool is UTF-16 but we want a UTF-8 string */ string gettexstring (strnumber s) { unsigned bytesToWrite = 0; poolpointer len, i, j; string name; len = strstart[s + 1 - 65536L] - strstart[s - 65536L]; name = xmalloc(len * 3 + 1); /* max UTF16->UTF8 expansion (code units, not bytes) */ for (i = 0, j = 0; i < len; i++) { unsigned c = strpool[i + strstart[s - 65536L]]; if (c >= 0xD800 && c <= 0xDBFF) { unsigned lo = strpool[++i + strstart[s - 65536L]]; if (lo >= 0xDC00 && lo <= 0xDFFF) c = (c - 0xD800) * 0x0400 + lo - 0xDC00; else c = 0xFFFD; } if (c < 0x80) bytesToWrite = 1; else if (c < 0x800) bytesToWrite = 2; else if (c < 0x10000) bytesToWrite = 3; else if (c < 0x110000) bytesToWrite = 4; else { bytesToWrite = 3; c = 0xFFFD; } j += bytesToWrite; switch (bytesToWrite) { /* note: everything falls through. */ case 4: name[--j] = ((c | 0x80) & 0xBF); c >>= 6; case 3: name[--j] = ((c | 0x80) & 0xBF); c >>= 6; case 2: name[--j] = ((c | 0x80) & 0xBF); c >>= 6; case 1: name[--j] = (c | firstByteMark[bytesToWrite]); } j += bytesToWrite; } name[j] = 0; return name; } #else string gettexstring (strnumber s) { poolpointer len; string name; #if !defined(Aleph) len = strstart[s + 1] - strstart[s]; #else len = strstartar[s + 1 - 65536L] - strstartar[s - 65536L]; #endif name = (string)xmalloc (len + 1); #if !defined(Aleph) strncpy (name, (string)&strpool[strstart[s]], len); #else { poolpointer i; /* Don't use strncpy. The strpool is not made up of chars. */ for (i=0; i= (size_t)poolsize) { fprintf (stderr, "\nstring pool overflow\n"); /* fixme */ exit (1); } s = buf; while (*s) strpool[poolptr++] = *s++; s = filename; while (*s) strpool[poolptr++] = *s++; return (oldpoolptr); } #endif /* Metafont/MetaPost fraction routines. Replaced either by assembler or C. The assembler syntax doesn't work on Solaris/x86. */ #ifndef TeX #if defined (__sun__) || defined (__cplusplus) #define NO_MF_ASM #endif /* The assembler code is not PIC safe on i?86 so use C code. */ #if defined (__PIC__) && defined (__i386__) #define NO_MF_ASM #endif #if defined(WIN32) && !defined(NO_MF_ASM) && !defined(__MINGW32__) #include "lib/mfmpw32.c" #elif defined (__i386__) && defined (__GNUC__) && !defined (NO_MF_ASM) #include "lib/mfmpi386.asm" #else /* Replace fixed-point fraction routines from mf.web and mp.web with Hobby's floating-point C code. */ /**************************************************************** Copyright 1990 - 1995 by AT&T Bell Laboratories. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that the copyright notice and this permission notice and warranty disclaimer appear in supporting documentation, and that the names of AT&T Bell Laboratories or any of its entities not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. AT&T disclaims all warranties with regard to this software, including all implied warranties of merchantability and fitness. In no event shall AT&T be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use or performance of this software. ****************************************************************/ /********************************************************** The following is by John Hobby **********************************************************/ #ifndef FIXPT /* These replacements for takefraction, makefraction, takescaled, makescaled run about 3 to 11 times faster than the standard versions on modern machines that have fast hardware for double-precision floating point. They should produce approximately correct results on all machines and agree exactly with the standard versions on machines that satisfy the following conditions: 1. Doubles must have at least 46 mantissa bits; i.e., numbers expressible as n*2^k with abs(n)<2^46 should be representable. 2. The following should hold for addition, subtraction, and multiplcation but not necessarily for division: A. If the true answer is between two representable numbers, the computed answer must be one of them. B. When the true answer is representable, this must be the computed result. 3. Dividing one double by another should always produce a relative error of at most one part in 2^46. (This is why the mantissa requirement is 46 bits instead of 45 bits.) 3. In the absence of overflow, double-to-integer conversion should truncate toward zero and do this in an exact fashion. 4. Integer-to-double convesion should produce exact results. 5. Dividing one power of two by another should yield an exact result. 6. ASCII to double conversion should be exact for integer values. 7. Integer arithmetic must be done in the two's-complement system. */ #define ELGORDO 0x7fffffff #define TWEXP31 2147483648.0 #define TWEXP28 268435456.0 #define TWEXP16 65536.0 #define TWEXP_16 (1.0/65536.0) #define TWEXP_28 (1.0/268435456.0) integer ztakefraction (integer p, integer q) /* Approximate p*q/2^28 */ { register double d; register integer i; d = (double)p * (double)q * TWEXP_28; if ((p^q) >= 0) { d += 0.5; if (d>=TWEXP31) { if (d!=TWEXP31 || (((p&077777)*(q&077777))&040000)==0) aritherror = true; return ELGORDO; } i = (integer) d; if (d==i && (((p&077777)*(q&077777))&040000)!=0) --i; } else { d -= 0.5; if (d<= -TWEXP31) { if (d!= -TWEXP31 || ((-(p&077777)*(q&077777))&040000)==0) aritherror = true; return -ELGORDO; } i = (integer) d; if (d==i && ((-(p&077777)*(q&077777))&040000)!=0) ++i; } return i; } integer ztakescaled (integer p, integer q) /* Approximate p*q/2^16 */ { register double d; register integer i; d = (double)p * (double)q * TWEXP_16; if ((p^q) >= 0) { d += 0.5; if (d>=TWEXP31) { if (d!=TWEXP31 || (((p&077777)*(q&077777))&040000)==0) aritherror = true; return ELGORDO; } i = (integer) d; if (d==i && (((p&077777)*(q&077777))&040000)!=0) --i; } else { d -= 0.5; if (d<= -TWEXP31) { if (d!= -TWEXP31 || ((-(p&077777)*(q&077777))&040000)==0) aritherror = true; return -ELGORDO; } i = (integer) d; if (d==i && ((-(p&077777)*(q&077777))&040000)!=0) ++i; } return i; } /* Note that d cannot exactly equal TWEXP31 when the overflow test is made because the exact value of p/q cannot be strictly between (2^31-1)/2^28 and 8/1. No pair of integers less than 2^31 has such a ratio. */ integer zmakefraction (integer p, integer q) /* Approximate 2^28*p/q */ { register double d; register integer i; #ifdef DEBUG if (q==0) confusion(47); #endif /* DEBUG */ d = TWEXP28 * (double)p /(double)q; if ((p^q) >= 0) { d += 0.5; if (d>=TWEXP31) {aritherror=true; return ELGORDO;} i = (integer) d; if (d==i && ( ((q>0 ? -q : q)&077777) * (((i&037777)<<1)-1) & 04000)!=0) --i; } else { d -= 0.5; if (d<= -TWEXP31) {aritherror=true; return -ELGORDO;} i = (integer) d; if (d==i && ( ((q>0 ? q : -q)&077777) * (((i&037777)<<1)+1) & 04000)!=0) ++i; } return i; } /* Note that d cannot exactly equal TWEXP31 when the overflow test is made because the exact value of p/q cannot be strictly between (2^31-1)/2^16 and 2^15/1. No pair of integers less than 2^31 has such a ratio. */ integer zmakescaled (integer p, integer q) /* Approximate 2^16*p/q */ { register double d; register integer i; #ifdef DEBUG if (q==0) confusion(47); #endif /* DEBUG */ d = TWEXP16 * (double)p /(double)q; if ((p^q) >= 0) { d += 0.5; if (d>=TWEXP31) {aritherror=true; return ELGORDO;} i = (integer) d; if (d==i && ( ((q>0 ? -q : q)&077777) * (((i&037777)<<1)-1) & 04000)!=0) --i; } else { d -= 0.5; if (d<= -TWEXP31) {aritherror=true; return -ELGORDO;} i = (integer) d; if (d==i && ( ((q>0 ? q : -q)&077777) * (((i&037777)<<1)+1) & 04000)!=0) ++i; } return i; } #endif /* not FIXPT */ #endif /* not assembler */ #endif /* not TeX, i.e., MF */ #ifdef MF /* On-line display routines for Metafont. Here we use a dispatch table indexed by the MFTERM or TERM environment variable to select the graphics routines appropriate to the user's terminal. stdout must be connected to a terminal for us to do any graphics. */ #ifdef MFNOWIN #undef AMIGAWIN #undef EPSFWIN #undef HP2627WIN #undef MFTALKWIN #undef NEXTWIN #undef REGISWIN #undef SUNWIN #undef TEKTRONIXWIN #undef UNITERMWIN #undef WIN32WIN #undef X11WIN #endif /* Prototypes for Metafont display routines: mf_XXX_initscreen, mf_XXX_updatescreen, mf_XXX_blankrectangle, and mf_XXX_paintrow. */ #include /* This variable, `mfwsw', contains the dispatch tables for each terminal. We map the Pascal calls to the routines `init_screen', `update_screen', `blank_rectangle', and `paint_row' into the appropriate entry point for the specific terminal that MF is being run on. */ struct mfwin_sw { const char *mfwsw_type; /* Name of terminal a la TERMCAP. */ int (*mfwsw_initscreen) (void); void (*mfwsw_updatescrn) (void); void (*mfwsw_blankrect) (screencol, screencol, screenrow, screenrow); void (*mfwsw_paintrow) (screenrow, pixelcolor, transspec, screencol); } mfwsw[] = { #ifdef AMIGAWIN { "amiterm", mf_amiga_initscreen, mf_amiga_updatescreen, mf_amiga_blankrectangle, mf_amiga_paintrow }, #endif #ifdef EPSFWIN { "epsf", mf_epsf_initscreen, mf_epsf_updatescreen, mf_epsf_blankrectangle, mf_epsf_paintrow }, #endif #ifdef HP2627WIN { "hp2627", mf_hp2627_initscreen, mf_hp2627_updatescreen, mf_hp2627_blankrectangle, mf_hp2627_paintrow }, #endif #ifdef MFTALKWIN { "mftalk", mf_mftalk_initscreen, mf_mftalk_updatescreen, mf_mftalk_blankrectangle, mf_mftalk_paintrow }, #endif #ifdef NEXTWIN { "next", mf_next_initscreen, mf_next_updatescreen, mf_next_blankrectangle, mf_next_paintrow }, #endif #ifdef REGISWIN { "regis", mf_regis_initscreen, mf_regis_updatescreen, mf_regis_blankrectangle, mf_regis_paintrow }, #endif #ifdef SUNWIN { "sun", mf_sun_initscreen, mf_sun_updatescreen, mf_sun_blankrectangle, mf_sun_paintrow }, #endif #ifdef TEKTRONIXWIN { "tek", mf_tektronix_initscreen, mf_tektronix_updatescreen, mf_tektronix_blankrectangle, mf_tektronix_paintrow }, #endif #ifdef UNITERMWIN { "uniterm", mf_uniterm_initscreen, mf_uniterm_updatescreen, mf_uniterm_blankrectangle, mf_uniterm_paintrow }, #endif #ifdef WIN32WIN { "win32term", mf_win32_initscreen, mf_win32_updatescreen, mf_win32_blankrectangle, mf_win32_paintrow }, #endif #ifdef X11WIN { "xterm", mf_x11_initscreen, mf_x11_updatescreen, mf_x11_blankrectangle, mf_x11_paintrow }, #endif /* Always support this. */ { "trap", mf_trap_initscreen, mf_trap_updatescreen, mf_trap_blankrectangle, mf_trap_paintrow }, /* Finally, we must have an entry with a terminal type of NULL. */ { NULL, NULL, NULL, NULL, NULL } }; /* End of the array initialization. */ /* This is a pointer to the mfwsw[] entry that we find. */ static struct mfwin_sw *mfwp; /* The following are routines that just jump to the correct terminal-specific graphics code. If none of the routines in the dispatch table exist, or they fail, we produce trap-compatible output, i.e., the same words and punctuation that the unchanged mf.web would produce. */ /* This returns true if we can do window operations, else false. */ boolean initscreen (void) { int retval; /* If MFTERM is set, use it. */ const_string tty_type = kpse_var_value ("MFTERM"); if (tty_type == NULL) { #if defined (AMIGA) tty_type = "amiterm"; #elif defined (WIN32) tty_type = "win32term"; #elif defined (OS2) || defined (__DJGPP__) /* not AMIGA nor WIN32 */ tty_type = "mftalk"; #else /* not (OS2 or WIN32 or __DJGPP__ or AMIGA) */ /* If DISPLAY is set, we are X11; otherwise, who knows. */ boolean have_display = getenv ("DISPLAY") != NULL; tty_type = have_display ? "xterm" : getenv ("TERM"); /* If we don't know what kind of terminal this is, or if Metafont isn't being run interactively, don't do any online output. */ if (tty_type == NULL || (!STREQ (tty_type, "trap") && !isatty (fileno (stdout)))) return 0; #endif /* not (OS2 or WIN32 or __DJGPP__ or AMIGA) */ } /* Test each of the terminals given in `mfwsw' against the terminal type, and take the first one that matches, or if the user is running under Emacs, the first one. */ for (mfwp = mfwsw; mfwp->mfwsw_type != NULL; mfwp++) { if (!strncmp (mfwp->mfwsw_type, tty_type, strlen (mfwp->mfwsw_type)) || STREQ (tty_type, "emacs")) { if (mfwp->mfwsw_initscreen) { retval = (*mfwp->mfwsw_initscreen) (); #ifdef WIN32 Sleep(1000); /* Wait for opening a window */ #endif return retval; } else { fprintf (stderr, "mf: Couldn't initialize online display for `%s'.\n", tty_type); break; } } } /* The current terminal type wasn't found in any of the entries, or initalization failed, so silently give up, assuming that the user isn't on a terminal that supports graphic output. */ return 0; } /* Make sure everything is visible. */ void updatescreen (void) { if (mfwp->mfwsw_updatescrn) (*mfwp->mfwsw_updatescrn) (); } /* This sets the rectangle bounded by ([left,right], [top,bottom]) to the background color. */ void blankrectangle (screencol left, screencol right, screenrow top, screenrow bottom) { if (mfwp->mfwsw_blankrect) (*mfwp->mfwsw_blankrect) (left, right, top, bottom); } /* This paints ROW, starting with the color INIT_COLOR. TRANSITION_VECTOR then specifies the length of the run; then we switch colors. This goes on for VECTOR_SIZE transitions. */ void paintrow (screenrow row, pixelcolor init_color, transspec transition_vector, screencol vector_size) { if (mfwp->mfwsw_paintrow) (*mfwp->mfwsw_paintrow) (row, init_color, transition_vector, vector_size); } #endif /* MF */