/* tex-make.c: Run external programs to make TeX-related files. Copyright (C) 1993, 94, 95, 96, 97 Karl Berry. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include #include #include #include #include #include #include /* We never throw away stdout, since that is supposed to be the filename found, if all is successful. This variable controls whether stderr is thrown away. */ boolean kpse_make_tex_discard_errors = false; /* We set the envvar MAKETEX_MAG, which is part of the default spec for MakeTeXPK above, based on KPATHSEA_DPI and MAKETEX_BASE_DPI. */ static void set_maketex_mag P1H(void) { char q[MAX_INT_LENGTH * 3 + 3]; int m; string dpi_str = getenv ("KPATHSEA_DPI"); string bdpi_str = getenv ("MAKETEX_BASE_DPI"); unsigned dpi = dpi_str ? atoi (dpi_str) : 0; unsigned bdpi = bdpi_str ? atoi (bdpi_str) : 0; /* If the environment variables aren't set, it's a bug. */ assert (dpi != 0 && bdpi != 0); /* Fix up for roundoff error. Hopefully the driver has already fixed up DPI, but may as well be safe, and also get the magstep number. */ (void) kpse_magstep_fix (dpi, bdpi, &m); if (m == 0) sprintf (q, "%d+%d/%d", dpi / bdpi, dpi % bdpi, bdpi); else { /* m is encoded with LSB being a ``half'' bit (see magstep.h). Are we making an assumption here about two's complement? Probably. In any case, if m is negative, we have to put in the sign explicitly, since m/2==0 if m==-1. */ const_string sign = ""; if (m < 0) { m *= -1; sign = "-"; } sprintf (q, "magstep\\(%s%d.%d\\)", sign, m / 2, (m & 1) * 5); } xputenv ("MAKETEX_MAG", q); } /* This mktex... program was disabled, or the script failed. If this was a font creation (according to FORMAT), append CMD to a file missfont.log in the current directory. */ static void misstex P2C(kpse_file_format_type, format, const_string, cmd) { static FILE *missfont = NULL; /* If we weren't trying to make a font, do nothing. Maybe should allow people to specify what they want recorded? */ if (format > kpse_any_glyph_format && format != kpse_tfm_format && format != kpse_vf_format) return; /* If this is the first time, have to open the log file. But don't bother logging anything if they were discarding errors. */ if (!missfont && !kpse_make_tex_discard_errors) { const_string missfont_name = kpse_var_value ("MISSFONT_LOG"); if (!missfont_name || *missfont_name == '1') { missfont_name = "missfont.log"; /* take default name */ } else if (missfont_name && (*missfont_name == 0 || *missfont_name == '0')) { missfont_name = NULL; /* user requested no missfont.log */ } /* else use user's name */ missfont = missfont_name ? fopen (missfont_name, FOPEN_A_MODE) : NULL; if (!missfont && kpse_var_value ("TEXMFOUTPUT")) { missfont_name = concat3 (kpse_var_value ("TEXMFOUTPUT"), DIR_SEP_STRING, missfont_name); missfont = fopen (missfont_name, FOPEN_A_MODE); } if (missfont) fprintf (stderr, "kpathsea: Appending font creation commands to %s.\n", missfont_name); } /* Write the command if we have a log file. */ if (missfont) { fputs (cmd, missfont); putc ('\n', missfont); } } /* Assume the script outputs the filename it creates (and nothing else) on standard output; hence, we run the script with `popen'. */ static string maketex P2C(kpse_file_format_type, format, const_string, passed_cmd) { string ret; unsigned i; FILE *f; string cmd = xstrdup (passed_cmd); #if defined (MSDOS) || defined (WIN32) /* For discarding stderr. This is so we don't require an MSDOS user to istall a unixy shell (see kpse_make_tex below): they might devise their own ingenious ways of running mktex... even though they don't have such a shell. */ int temp_stderr = -1; int save_stderr = -1; #endif /* If the user snuck `backquotes` or $(command) substitutions into the name, foil them. */ for (i = 0; i < strlen (cmd); i++) { if (cmd[i] == '`' || (cmd[i] == '$' && cmd[i+1] == '(')) { cmd[i] = '#'; } } /* Tell the user we are running the script, so they have a clue as to what's going on if something messes up. But if they asked to discard output, they probably don't want to see this, either. */ if (!kpse_make_tex_discard_errors) { fprintf (stderr, "kpathsea: Running %s\n", cmd); } #if defined (MSDOS) || defined (WIN32) else { temp_stderr = open ("NUL", O_WRONLY); if (temp_stderr >= 0) { save_stderr = dup (2); if (save_stderr >= 0) dup2 (temp_stderr, 2); } /* Else they lose: the errors WILL be shown. However, open/dup aren't supposed to fail in this case, it's just my paranoia. */ } #endif /* Run the script. The Amiga has a different interface. */ #ifdef AMIGA ret = system (cmd) == 0 ? getenv ("LAST_FONT_CREATED") : NULL; #else /* not AMIGA */ f = popen (cmd, FOPEN_R_MODE); #if defined (MSDOS) || defined (WIN32) if (kpse_make_tex_discard_errors) { /* Close /dev/null and revert stderr. */ if (save_stderr >= 0) { dup2 (save_stderr, 2); close (save_stderr); } if (temp_stderr >= 0) close (temp_stderr); } #endif if (f) { int c; string fn; /* The final filename. */ unsigned len; /* And its length. */ fn_type output; output = fn_init (); /* Collect the script output. */ /* Read all the output and terminate with a null. */ while ((c = getc (f)) != EOF) fn_1grow (&output, c); fn_1grow (&output, 0); /* Maybe should check for `EXIT_SUCCESS' status before even looking at the output? In some versions of Linux, pclose fails with ECHILD (No child processes), maybe only if we're being run by lpd. So don't make this a fatal error. */ if (pclose (f) == -1) { perror ("pclose(mktexpk)"); WARNING ("kpathsea: This is probably the Linux pclose bug; continuing"); } len = FN_LENGTH (output); fn = FN_STRING (output); /* Remove trailing newlines and returns. */ while (len > 1 && (fn[len - 2] == '\n' || fn[len - 2] == '\r')) { fn[len - 2] = 0; len--; } /* If no output from script, return NULL. Otherwise check what it output. */ ret = len == 1 ? NULL : kpse_readable_file (fn); if (!ret && len > 1) { WARNING1 ("kpathsea: mktexpk output `%s' instead of a filename", fn); } /* Free the name if we're not returning it. */ if (fn != ret) free (fn); } else { /* popen failed. */ perror ("kpathsea"); ret = NULL; } #endif /* not AMIGA */ if (ret == NULL) misstex (format, cmd); else kpse_db_insert (ret); return ret; } /* Create BASE in FORMAT and return the generated filename, or return NULL. */ string kpse_make_tex P2C(kpse_file_format_type, format, const_string, base) { kpse_format_info_type spec; /* some compilers lack struct initialization */ string ret = NULL; spec = kpse_format_info[format]; if (!spec.type) { /* Not initialized yet? */ kpse_init_format (format); spec = kpse_format_info[format]; } if (spec.program && spec.program_enabled_p) { /* See the documentation for the envvars we're dealing with here. */ string args, cmd; const_string prog = spec.program; const_string arg_spec = spec.program_args; if (format <= kpse_any_glyph_format) set_maketex_mag (); /* Here's an awful kludge: if the mode is `/', mktexpk recognizes it as a special case. `kpse_prog_init' sets it to this in the first place when no mode is otherwise specified; this is so when the user defines a resolution, they don't also have to specify a mode; instead, mktexpk's guesses will take over. They use / for the value because then when it is expanded as part of the PKFONTS et al. path values, we'll wind up searching all the pk directories. We put $MAKETEX_MODE in the path values in the first place so that sites with two different devices with the same resolution can find the right fonts; but such sites are uncommon, so they shouldn't make things harder for everyone else. */ args = arg_spec ? kpse_var_expand (arg_spec) : (string) ""; /* The command is the program name plus the arguments. */ cmd = concatn (prog, " ", args, " ", base, NULL); /* Only way to discard errors is redirect stderr inside another shell; otherwise, if the mktex... script doesn't exist, we will see the `sh: mktex...: not found' error. No point in doing this if we're not actually going to run anything. */ #if !defined(MSDOS) && !defined(WIN32) && !defined(AMIGA) /* We don't want to require that a Unix-like shell be installed on MS-DOS or WIN32 systems, so we will redirect stderr by hand (in maketex). */ if (kpse_make_tex_discard_errors) { string old_cmd = cmd; #ifdef OS2 cmd = concat3 ("cmd /c \"", cmd, "\" 2>/dev/nul"); #else cmd = concat3 ("sh -c \"", cmd, "\" 2>/dev/null"); #endif free (old_cmd); } #endif ret = maketex (format, cmd); free (cmd); if (*args) free (args); } return ret; } #ifdef TEST void test_make_tex (kpse_file_format_type fmt, const_string base) { string answer; printf ("\nAttempting %s in format %d:\n", base, fmt); answer = kpse_make_tex (fmt, base); puts (answer ? answer : "(nil)"); } int main () { xputenv ("KPATHSEA_DPI", "781"); /* call mktexpk */ xputenv ("MAKETEX_BASE_DPI", "300"); /* call mktexpk */ KPSE_MAKE_SPEC_ENABLED (kpse_make_specs[kpse_pk_format]) = true; test_make_tex (kpse_pk_format, "cmr10"); /* Fail with mktextfm. */ KPSE_MAKE_SPEC_ENABLED (kpse_make_specs[kpse_tfm_format]) = true; test_make_tex (kpse_tfm_format, "foozler99"); /* Call something disabled. */ test_make_tex (kpse_bst_format, "no-way"); return 0; } #endif /* TEST */ /* Local variables: test-compile-command: "gcc -g -I. -I.. -DTEST tex-make.c kpathsea.a" End: */