File: [cvsweb.bsd.lv] / texi2mdoc / main.c (download)
Revision 1.24, Fri Feb 20 09:58:50 2015 UTC (9 years, 3 months ago) by kristaps
Branch: MAIN
Changes since 1.23: +168 -974 lines
Split utility functions out of main.c.
|
/* $Id: main.c,v 1.24 2015/02/20 09:58:50 kristaps Exp $ */
/*
* Copyright (c) 2015 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, 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.
*/
#include <sys/mman.h>
#include <sys/stat.h>
#include <assert.h>
#include <ctype.h>
#include <fcntl.h>
#include <getopt.h>
#include <libgen.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "extern.h"
#define SECTSZ 4
static const char *const sects[SECTSZ] = {
"Sh",
"Ss",
"Em",
"No",
};
static void doaccent(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doblock(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dobracket(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dobye(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dodefn(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dodisplay(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doenumerate(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doexample(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doignargn(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doignblock(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doignbracket(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doignline(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doinline(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doinclude(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doitem(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doitemize(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dolink(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void domath(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void domultitable(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doquotation(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dotable(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dotop(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dosecoffs(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dosection(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dosp(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dosubsection(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dosubsubsection(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dosymbol(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dotab(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dotitle(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dovalue(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doverbinclude(struct texi *, enum texicmd, const char *, size_t, size_t *);
static const struct texitok __texitoks[TEXICMD__MAX] = {
/* TEXICMD__BEGIN */
{ doignargn, "acronym", 7 }, /* TEXICMD_ACRONYM */
{ doaccent, "'", 1 }, /* TEXICMD_ACUTE */
{ doignline, "afourpaper", 10 }, /* TEXICMD_A4PAPER */
{ doignbracket, "anchor", 6 }, /* TEXICMD_ANCHOR */
{ dosection, "appendix", 8 }, /* TEXICMD_APPENDIX */
{ dosection, "appendixsec", 11 }, /* TEXICMD_APPENDIXSEC */
{ dosubsection, "appendixsubsec", 14 }, /* TEXICMD_APPENDIXSUBSEC */
{ dosubsubsection, "appendixsubsubsec", 17 }, /* TEXICMD_APPENDIXSUBSUBSEC */
{ dosymbol, "*", 1 }, /* TEXICMD_ASTERISK */
{ dosymbol, "@", 1 }, /* TEXICMD_AT */
{ doignline, "author", 6 }, /* TEXICMD_AUTHOR */
{ doinline, "b", 1 }, /* TEXICMD_BOLD */
{ dosymbol, "!", 1 }, /* TEXICMD_BANG */
{ dosymbol, "bullet", 6 }, /* TEXICMD_BULLET */
{ dobye, "bye", 3 }, /* TEXICMD_BYE */
{ doignline, "center", 6 }, /* TEXICMD_CENTER */
{ dosection, "chapter", 7 }, /* TEXICMD_CHAPTER */
{ doignline, "cindex", 6 }, /* TEXICMD_CINDEX */
{ doaccent, "^", 1 }, /* TEXICMD_CIRCUMFLEX */
{ doinline, "cite", 4 }, /* TEXICMD_CITE */
{ dovalue, "clear", 5 }, /* TEXICMD_CLEAR */
{ doinline, "code", 4 }, /* TEXICMD_CODE */
{ dosymbol, ":", 1 }, /* TEXICMD_COLON */
{ NULL, "columnfractions", 15 }, /* TEXICMD_COLUMNFRACTIONS */
{ doinline, "command", 7 }, /* TEXICMD_COMMAND */
{ doignline, "c", 1 }, /* TEXICMD_COMMENT */
{ doignline, "comment", 7 }, /* TEXICMD_COMMENT_LONG */
{ doignline, "contents", 8 }, /* TEXICMD_CONTENTS */
{ doignblock, "copying", 7 }, /* TEXICMD_COPYING */
{ dosymbol, "copyright", 9 }, /* TEXICMD_COPYRIGHT */
{ dodefn, "deffn", 5 }, /* TEXICMD_DEFFN */
{ dodefn, "deffnx", 6 }, /* TEXICMD_DEFFNX */
{ dodefn, "defmac", 6 }, /* TEXICMD_DEFMAC */
{ dodefn, "defmacx", 7 }, /* TEXICMD_DEFMACX */
{ dodefn, "deftp", 5 }, /* TEXICMD_DEFTP */
{ dodefn, "deftpx", 6 }, /* TEXICMD_DEFTPX */
{ dodefn, "deftypefn", 9 }, /* TEXICMD_DEFTYPEFN */
{ dodefn, "deftypefnx", 10 }, /* TEXICMD_DEFTYPEFNX */
{ dodefn, "deftypefun", 10 }, /* TEXICMD_DEFTYPEFUN */
{ dodefn, "deftypefunx", 11 }, /* TEXICMD_DEFTYPEFUNX */
{ dodefn, "deftypevar", 10 }, /* TEXICMD_DEFTYPEVAR */
{ dodefn, "deftypevarx", 11 }, /* TEXICMD_DEFTYPEVARX */
{ dodefn, "deftypevr", 9 }, /* TEXICMD_DEFTYPEVR */
{ dodefn, "deftypevrx", 10 }, /* TEXICMD_DEFTYPEVRX */
{ dodefn, "defun", 5 }, /* TEXICMD_DEFUN */
{ dodefn, "defunx", 6 }, /* TEXICMD_DEFUNX */
{ dodefn, "defvar", 6 }, /* TEXICMD_DEFVAR */
{ dodefn, "defvarx", 7 }, /* TEXICMD_DEFVARX */
{ dodefn, "defvr", 5 }, /* TEXICMD_DEFVR */
{ dodefn, "defvrx", 6 }, /* TEXICMD_DEFVRX */
{ doignblock, "detailmenu", 10 }, /* TEXICMD_DETAILMENU */
{ doinline, "dfn", 3 }, /* TEXICMD_DFN */
{ doignline, "dircategory", 11 }, /* TEXICMD_DIRCATEGORY */
{ doignblock, "direntry", 8 }, /* TEXICMD_DIRENTRY */
{ dodisplay, "display", 7 }, /* TEXICMD_DISPLAY */
{ dosymbol, "dots", 4 }, /* TEXICMD_DOTS */
{ dolink, "email", 5 }, /* TEXICMD_EMAIL */
{ doinline, "emph", 4 }, /* TEXICMD_EMPH */
{ NULL, "end", 3 }, /* TEXICMD_END */
{ doenumerate, "enumerate", 9 }, /* TEXICMD_ENUMERATE */
{ doinline, "env", 3 }, /* TEXICMD_ENV */
{ dosymbol, "error", 5 }, /* TEXICMD_ERROR */
{ doexample, "example", 7 }, /* TEXICMD_EXAMPLE */
{ dosymbol, "expansion", 9 }, /* TEXICMD_EXPANSION */
{ doinline, "file", 4 }, /* TEXICMD_FILE */
{ doignline, "finalout", 8 }, /* TEXICMD_FINALOUT */
{ doignline, "findex", 6 }, /* TEXICMD_FINDEX */
{ dotable, "ftable", 6 }, /* TEXICMD_FTABLE */
{ dodisplay, "format", 6 }, /* TEXICMD_FORMAT */
{ doaccent, "`", 1 }, /* TEXICMD_GRAVE */
{ doblock, "group", 5 }, /* TEXICMD_GROUP */
{ dosection, "heading", 7 }, /* TEXICMD_HEADING */
{ doignline, "headings", 8 }, /* TEXICMD_HEADINGS */
{ doitem, "headitem", 8 }, /* TEXICMD_HEADITEM */
{ dosymbol, "-", 1 }, /* TEXICMD_HYPHEN */
{ doinline, "i", 1 }, /* TEXICMD_I */
{ dovalue, "ifclear", 7 }, /* TEXICMD_IFCLEAR */
{ doignblock, "ifdocbook", 9 }, /* TEXICMD_IFDOCBOOK */
{ doignblock, "ifhtml", 6 }, /* TEXICMD_IFHTML */
{ doignblock, "ifinfo", 6 }, /* TEXICMD_IFINFO */
{ doblock, "ifnotdocbook", 12 }, /* TEXICMD_IFNOTDOCBOOK */
{ doblock, "ifnothtml", 9 }, /* TEXICMD_IFNOTHTML */
{ doblock, "ifnotinfo", 9 }, /* TEXICMD_IFNOTINFO */
{ doignblock, "ifnotplaintext", 14 }, /* TEXICMD_IFNOTPLAINTEXT */
{ doblock, "ifnottex", 8 }, /* TEXICMD_IFNOTTEX */
{ doblock, "ifnotxml", 8 }, /* TEXICMD_IFNOTXML */
{ doblock, "ifplaintext", 11 }, /* TEXICMD_IFPLAINTEXT */
{ doignblock, "iftex", 5 }, /* TEXICMD_IFTEX */
{ doignblock, "ifset", 5 }, /* TEXICMD_IFSET */
{ doignblock, "ifxml", 5 }, /* TEXICMD_IFXML */
{ doignblock, "ignore", 6 }, /* TEXICMD_IGNORE */
{ doignbracket, "image", 5 }, /* TEXICMD_IMAGE */
{ doinclude, "include", 7 }, /* TEXICMD_INCLUDE */
{ dodisplay, "indentblock", 11 }, /* TEXICMD_INDENTBLOCK */
{ doignline, "insertcopying", 13 }, /* TEXICMD_INSERTCOPYING */
{ doitem, "item", 4 }, /* TEXICMD_ITEM */
{ doitemize, "itemize", 7 }, /* TEXICMD_ITEMIZE */
{ doitem, "itemx", 5 }, /* TEXICMD_ITEMX */
{ doinline, "kbd", 3 }, /* TEXICMD_KBD */
{ dobracket, "key", 3 }, /* TEXICMD_KEY */
{ doignline, "kindex", 6 }, /* TEXICMD_KINDEX */
{ dosymbol, "LaTeX", 5 }, /* TEXICMD_LATEX */
{ dosecoffs, "lowersections", 13 }, /* TEXICMD_LOWERSECTIONS */
{ domath, "math", 4 }, /* TEXICMD_MATH */
{ doignblock, "menu", 4 }, /* TEXICMD_MENU */
{ domultitable, "multitable", 10 }, /* TEXICMD_MULTITABLE */
{ doignline, "need", 4 }, /* TEXICMD_NEED */
{ dosymbol, "\n", 1 }, /* TEXICMD_NEWLINE */
{ doignline, "node", 4 }, /* TEXICMD_NODE */
{ doignline, "noindent", 8 }, /* TEXICMD_NOINDENT */
{ doinline, "option", 6 }, /* TEXICMD_OPTION */
{ dolink, "pxref", 5 }, /* TEXICMD_PXREF */
{ dosymbol, "?", 1 }, /* TEXICMD_QUESTIONMARK */
{ doquotation, "quotation", 9 }, /* TEXICMD_QUOTATION */
{ doignline, "page", 4 }, /* TEXICMD_PAGE */
{ doignline, "paragraphindent", 14 }, /* TEXICMD_PARINDENT */
{ doignline, "printindex", 10 }, /* TEXICMD_PRINTINDEX */
{ doinline, "r", 1 }, /* TEXICMD_R */
{ dosecoffs, "raisesections", 13 }, /* TEXICMD_RAISESECTIONS */
{ dobracket, "ref", 3 }, /* TEXICMD_REF */
{ dosymbol, "result", 6 }, /* TEXICMD_RESULT */
{ doinline, "samp", 4 }, /* TEXICMD_SAMP */
{ doinline, "sansserif", 9 }, /* TEXICMD_SANSSERIF */
{ dobracket, "sc", 2 }, /* TEXICMD_SC */
{ dosection, "section", 7 }, /* TEXICMD_SECTION */
{ dovalue, "set", 3 }, /* TEXICMD_SET */
{ doignline, "setchapternewpage", 17 }, /* TEXICMD_SETCHAPNEWPAGE */
{ doignline, "setfilename", 11 }, /* TEXICMD_SETFILENAME */
{ dotitle, "settitle", 8 }, /* TEXICMD_SETTITLE */
{ doinline, "slanted", 7 }, /* TEXICMD_SLANTED */
{ dosp, "sp", 2 }, /* TEXICMD_SP */
{ dosymbol, " ", 1 }, /* TEXICMD_SPACE */
{ doignline, "smallbook", 9 }, /* TEXICMD_SMALLBOOK */
{ dodisplay, "smalldisplay", 12 }, /* TEXICMD_SMALLDISPLAY */
{ doexample, "smallexample", 12 }, /* TEXICMD_SMALLEXAMPLE */
{ dodisplay, "smallformat", 11 }, /* TEXICMD_SMALLFORMAT */
{ dodisplay, "smallindentblock", 16 }, /* TEXICMD_SMALLINDENTBLOCK */
{ dosymbol, "{", 1 }, /* TEXICMD_SQUIGGLE_LEFT */
{ dosymbol, "}", 1 }, /* TEXICMD_SQUIGGLE_RIGHT */
{ doinline, "strong", 6 }, /* TEXICMD_STRONG */
{ dosubsection, "subheading", 10 }, /* TEXICMD_SUBHEADING */
{ dosubsection, "subsection", 10 }, /* TEXICMD_SUBSECTION */
{ dosubsubsection, "subsubsection", 13 }, /* TEXICMD_SUBSUBSECTION */
{ doignline, "subtitle", 8 }, /* TEXICMD_SUBTITLE */
{ doignline, "syncodeindex", 12 }, /* TEXICMD_SYNCODEINDEX */
{ doinline, "t", 1 }, /* TEXICMD_T */
{ dotab, "tab", 3 }, /* TEXICMD_TAB */
{ dosymbol, "\t", 1 }, /* TEXICMD_TABSYM */
{ dotable, "table", 5 }, /* TEXICMD_TABLE */
{ doignblock, "tex", 3 }, /* TEXICMD_TEX */
{ dosymbol, "TeX", 3 }, /* TEXICMD_TEXSYM */
{ doaccent, "~", 1 }, /* TEXICMD_TILDE */
{ doignline, "title", 5 }, /* TEXICMD_TITLE */
{ dobracket, "titlefont", 9 }, /* TEXICMD_TITLEFONT */
{ doignblock, "titlepage", 9 }, /* TEXICMD_TITLEPAGE */
{ dotop, "top", 3 }, /* TEXICMD_TOP */
{ doaccent, "\"", 1 }, /* TEXICMD_UMLAUT */
{ dosection, "unnumbered", 10 }, /* TEXICMD_UNNUMBERED */
{ dosection, "unnumberedsec", 13 }, /* TEXICMD_UNNUMBEREDSEC */
{ dosubsection, "unnumberedsubsec", 16 }, /* TEXICMD_UNNUMBEREDSUBSEC */
{ dosubsubsection, "unnumberedsubsubsec", 19 }, /* TEXICMD_UNNUMBEREDSUBSUBSEC */
{ dolink, "uref", 4 }, /* TEXICMD_UREF */
{ dolink, "url", 3 }, /* TEXICMD_URL */
{ dovalue, "value", 5 }, /* TEXICMD_VALUE */
{ doinline, "var", 3 }, /* TEXICMD_VAR */
{ doverbinclude, "verbatiminclude", 15 }, /* TEXICMD_VERBATIMINCLUDE */
{ doignline, "vindex", 6 }, /* TEXICMD_VINDEX */
{ dosp, "vskip", 5 }, /* TEXICMD_VSKIP */
{ dotable, "vtable", 6 }, /* TEXICMD_VTABLE */
{ dobracket, "w", 1 }, /* TEXICMD_W */
{ dolink, "xref", 4 }, /* TEXICMD_XREF */
/* TEXICMD__END */
};
const struct texitok *const texitoks = __texitoks;
static char *
lineargdup(struct texi *p, const char *buf, size_t sz, size_t *pos)
{
char *key;
size_t start, end;
while (*pos < sz && isws(buf[*pos]))
advance(p, buf, pos);
if (*pos == sz)
return(NULL);
for (start = end = *pos; end < sz; end++)
if ('\n' == buf[end])
break;
advanceto(p, buf, pos, end);
if (*pos < sz)
advance(p, buf, pos);
key = malloc(end - start + 1);
if (NULL == key) {
perror(NULL);
exit(EXIT_FAILURE);
}
memcpy(key, &buf[start], end - start);
key[end - start] = '\0';
return(key);
}
static void
dodefn(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
const char *blk;
blk = NULL;
switch (cmd) {
case (TEXICMD_DEFFN):
case (TEXICMD_DEFTP):
case (TEXICMD_DEFTYPEFN):
case (TEXICMD_DEFTYPEFUN):
case (TEXICMD_DEFTYPEVAR):
case (TEXICMD_DEFTYPEVR):
case (TEXICMD_DEFUN):
case (TEXICMD_DEFVAR):
case (TEXICMD_DEFVR):
blk = texitoks[cmd].tok;
break;
default:
break;
}
if (p->ign) {
NULL != blk ?
parseto(p, buf, sz, pos, blk) :
parseeoln(p, buf, sz, pos);
return;
}
if (NULL != blk)
texivspace(p);
switch (cmd) {
case (TEXICMD_DEFMAC):
case (TEXICMD_DEFMACX):
texiputchars(p, "Macro");
break;
case (TEXICMD_DEFTYPEVAR):
case (TEXICMD_DEFTYPEVARX):
case (TEXICMD_DEFVAR):
case (TEXICMD_DEFVARX):
texiputchars(p, "Variable");
break;
case (TEXICMD_DEFTYPEFUN):
case (TEXICMD_DEFTYPEFUNX):
case (TEXICMD_DEFUN):
case (TEXICMD_DEFUNX):
texiputchars(p, "Function");
break;
default:
parselinearg(p, buf, sz, pos);
break;
}
texiputchars(p, ":\n");
switch (cmd) {
case (TEXICMD_DEFMAC):
case (TEXICMD_DEFMACX):
teximacroopen(p, "Dv");
while (parselinearg(p, buf, sz, pos))
/* Spin. */ ;
teximacroclose(p);
break;
case (TEXICMD_DEFFN):
case (TEXICMD_DEFFNX):
case (TEXICMD_DEFUN):
case (TEXICMD_DEFUNX):
teximacroopen(p, "Fo");
parselinearg(p, buf, sz, pos);
teximacroclose(p);
teximacroopen(p, "Fa");
while (parselinearg(p, buf, sz, pos))
/* Spin. */ ;
teximacroclose(p);
teximacro(p, "Fc");
break;
case (TEXICMD_DEFTYPEFUN):
case (TEXICMD_DEFTYPEFUNX):
case (TEXICMD_DEFTYPEFN):
case (TEXICMD_DEFTYPEFNX):
teximacroopen(p, "Ft");
parselinearg(p, buf, sz, pos);
teximacroclose(p);
teximacroopen(p, "Fo");
parselinearg(p, buf, sz, pos);
teximacroclose(p);
teximacroopen(p, "Fa");
while (parselinearg(p, buf, sz, pos))
/* Spin. */ ;
teximacroclose(p);
teximacro(p, "Fc");
break;
case (TEXICMD_DEFTP):
case (TEXICMD_DEFTPX):
case (TEXICMD_DEFTYPEVAR):
case (TEXICMD_DEFTYPEVARX):
case (TEXICMD_DEFTYPEVR):
case (TEXICMD_DEFTYPEVRX):
teximacroopen(p, "Vt");
while (parselinearg(p, buf, sz, pos))
/* Spin. */ ;
teximacroclose(p);
break;
case (TEXICMD_DEFVAR):
case (TEXICMD_DEFVARX):
case (TEXICMD_DEFVR):
case (TEXICMD_DEFVRX):
teximacroopen(p, "Va");
while (parselinearg(p, buf, sz, pos))
/* Spin. */ ;
teximacroclose(p);
break;
default:
abort();
}
texivspace(p);
if (NULL != blk)
parseto(p, buf, sz, pos, blk);
}
static void
doignblock(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
p->ign++;
parseto(p, buf, sz, pos, texitoks[cmd].tok);
p->ign--;
}
static void
doblock(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
parseto(p, buf, sz, pos, texitoks[cmd].tok);
}
static void
doinline(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
const char *macro = NULL;
switch (cmd) {
case (TEXICMD_CODE):
case (TEXICMD_KBD):
case (TEXICMD_SAMP):
case (TEXICMD_T):
macro = "Li";
break;
case (TEXICMD_CITE):
case (TEXICMD_DFN):
case (TEXICMD_EMPH):
case (TEXICMD_I):
case (TEXICMD_SLANTED):
macro = "Em";
break;
case (TEXICMD_B):
case (TEXICMD_STRONG):
macro = "Sy";
break;
case (TEXICMD_COMMAND):
macro = "Xr";
break;
case (TEXICMD_ENV):
macro = "Ev";
break;
case (TEXICMD_FILE):
macro = "Pa";
break;
case (TEXICMD_OPTION):
macro = "Op";
break;
case (TEXICMD_VAR):
macro = "Va";
break;
default:
break;
}
if (NULL == macro || p->literal) {
parsebracket(p, buf, sz, pos);
return;
}
teximacroopen(p, macro);
p->seenws = 0;
parsebracket(p, buf, sz, pos);
texipunctuate(p, buf, sz, pos);
teximacroclose(p);
}
static void
doverbinclude(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
char fname[PATH_MAX], path[PATH_MAX];
int rc;
size_t i;
while (*pos < sz && ' ' == buf[*pos])
advance(p, buf, pos);
/* Read in the filename. */
for (i = 0; *pos < sz && '\n' != buf[*pos]; i++) {
if (i == sizeof(fname) - 1)
break;
fname[i] = buf[*pos];
advance(p, buf, pos);
}
if (i == 0)
texierr(p, "path too short");
else if ('\n' != buf[*pos])
texierr(p, "path too long");
else if ('/' == fname[0])
texierr(p, "no absolute paths");
fname[i] = '\0';
if (strstr(fname, "../") || strstr(fname, "/.."))
texierr(p, "insecure path");
rc = snprintf(path, sizeof(path),
"%s/%s", p->dirs[0], fname);
if (rc < 0)
texierr(p, "couldn't format path");
else if ((size_t)rc >= sizeof(path))
texierr(p, "path too long");
parsefile(p, path, 0);
}
static void
doinclude(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
char fname[PATH_MAX], path[PATH_MAX];
size_t i;
int rc;
while (*pos < sz && ' ' == buf[*pos])
advance(p, buf, pos);
/* Read in the filename. */
for (i = 0; *pos < sz && '\n' != buf[*pos]; i++) {
if (i == sizeof(fname) - 1)
break;
fname[i] = buf[*pos];
advance(p, buf, pos);
}
if (i == 0)
texierr(p, "path too short");
else if ('\n' != buf[*pos])
texierr(p, "path too long");
else if ('/' == fname[0])
texierr(p, "no absolute paths");
fname[i] = '\0';
if (strstr(fname, "../") || strstr(fname, "/.."))
texierr(p, "insecure path");
for (i = 0; i < p->dirsz; i++) {
rc = snprintf(path, sizeof(path),
"%s/%s", p->dirs[i], fname);
if (rc < 0)
texierr(p, "couldn't format path");
else if ((size_t)rc >= sizeof(path))
texierr(p, "path too long");
else if (-1 == access(path, R_OK))
continue;
parsefile(p, path, 1);
return;
}
texierr(p, "couldn't find %s in includes", fname);
}
static void
dobracket(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
parsebracket(p, buf, sz, pos);
}
static void
dodisplay(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
switch (cmd) {
case (TEXICMD_FORMAT):
case (TEXICMD_SMALLFORMAT):
teximacro(p, "Bd -filled");
break;
default:
teximacro(p, "Bd -filled -offset indent");
break;
}
p->seenvs = 1;
/* FIXME: ignore and parseeoln. */
advanceeoln(p, buf, sz, pos, 1);
parseto(p, buf, sz, pos, texitoks[cmd].tok);
teximacro(p, "Ed");
}
static void
doexample(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
teximacro(p, "Bd -literal -offset indent");
/* FIXME: ignore and parseeoln. */
advanceeoln(p, buf, sz, pos, 1);
p->literal++;
parseto(p, buf, sz, pos, texitoks[cmd].tok);
p->literal--;
teximacro(p, "Ed");
}
static void
dobye(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
texiexit(p);
exit(EXIT_SUCCESS);
}
static void
dotitle(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
size_t start, end;
while (*pos < sz && isws(buf[*pos]))
advance(p, buf, pos);
start = end = *pos;
while (end < sz && '\n' != buf[end])
end++;
free(p->subtitle);
p->subtitle = malloc(end - start + 1);
memcpy(p->subtitle, &buf[start], end - start);
p->subtitle[end - start] = '\0';
}
static void
doaccent(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (*pos == sz)
return;
advance(p, buf, pos);
switch (cmd) {
case (TEXICMD_ACUTE):
switch (buf[*pos]) {
case ('a'): case ('A'):
case ('e'): case ('E'):
case ('i'): case ('I'):
case ('o'): case ('O'):
case ('u'): case ('U'):
texiputchars(p, "\\(\'");
texiputchar(p, buf[*pos]);
break;
default:
texiputchar(p, buf[*pos]);
}
break;
case (TEXICMD_CIRCUMFLEX):
switch (buf[*pos]) {
case ('a'): case ('A'):
case ('e'): case ('E'):
case ('i'): case ('I'):
case ('o'): case ('O'):
case ('u'): case ('U'):
texiputchars(p, "\\(^");
texiputchar(p, buf[*pos]);
break;
default:
texiputchar(p, buf[*pos]);
}
break;
case (TEXICMD_GRAVE):
switch (buf[*pos]) {
case ('a'): case ('A'):
case ('e'): case ('E'):
case ('i'): case ('I'):
case ('o'): case ('O'):
case ('u'): case ('U'):
texiputchars(p, "\\(`");
texiputchar(p, buf[*pos]);
break;
default:
texiputchar(p, buf[*pos]);
}
break;
case (TEXICMD_TILDE):
switch (buf[*pos]) {
case ('a'): case ('A'):
case ('n'): case ('N'):
case ('o'): case ('O'):
texiputchars(p, "\\(~");
texiputchar(p, buf[*pos]);
break;
default:
texiputchar(p, buf[*pos]);
}
break;
case (TEXICMD_UMLAUT):
switch (buf[*pos]) {
case ('a'): case ('A'):
case ('e'): case ('E'):
case ('i'): case ('I'):
case ('o'): case ('O'):
case ('u'): case ('U'):
case ('y'):
texiputchars(p, "\\(:");
texiputchar(p, buf[*pos]);
break;
default:
texiputchar(p, buf[*pos]);
}
break;
default:
abort();
}
}
static void
dosymbol(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (p->seenws && p->outcol && 0 == p->literal) {
texiputchar(p, ' ');
p->seenws = 0;
}
switch (cmd) {
case (TEXICMD_ASTERISK):
case (TEXICMD_NEWLINE):
case (TEXICMD_SPACE):
case (TEXICMD_TABSYM):
texiputchar(p, ' ');
break;
case (TEXICMD_AT):
texiputchar(p, '@');
break;
case (TEXICMD_BANG):
texiputchar(p, '!');
break;
case (TEXICMD_BULLET):
texiputchars(p, "\\(bu");
break;
case (TEXICMD_COPYRIGHT):
texiputchars(p, "\\(co");
break;
case (TEXICMD_DOTS):
texiputchars(p, "...");
break;
case (TEXICMD_ERROR):
texiputchars(p, "error\\(->");
break;
case (TEXICMD_EXPANSION):
texiputchars(p, "\\(->");
break;
case (TEXICMD_LATEX):
texiputchars(p, "LaTeX");
break;
case (TEXICMD_QUESTIONMARK):
texiputchar(p, '?');
break;
case (TEXICMD_RESULT):
texiputchars(p, "\\(rA");
break;
case (TEXICMD_SQUIGGLE_LEFT):
texiputchars(p, "{");
break;
case (TEXICMD_SQUIGGLE_RIGHT):
texiputchars(p, "}");
break;
case (TEXICMD_TEXSYM):
texiputchars(p, "TeX");
break;
case (TEXICMD_COLON):
case (TEXICMD_HYPHEN):
break;
default:
texiwarn(p, "sym: %d", cmd);
abort();
}
if (texitoks[cmd].len > 1)
doignbracket(p, cmd, buf, sz, pos);
}
static void
doquotation(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
teximacro(p, "Qo");
parseto(p, buf, sz, pos, "quotation");
teximacro(p, "Qc");
}
static void
domath(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
size_t nest;
/*
* Math handling is different from everything else.
* We don't allow any subcomponents, and we ignore the rules in
* terms of @-commands.
* This departs from GNU's rules, but whatever.
*/
while (*pos < sz && isws(buf[*pos]))
advance(p, buf, pos);
if (*pos == sz || '{' != buf[*pos])
return;
advance(p, buf, pos);
if (p->seenws && p->outcol && 0 == p->literal)
texiputchar(p, ' ');
p->seenws = 0;
for (nest = 1; *pos < sz && nest > 0; ) {
if ('{' == buf[*pos])
nest++;
else if ('}' == buf[*pos])
if (0 == --nest)
continue;
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
if (*pos == sz)
return;
assert('}' == buf[*pos]);
advance(p, buf, pos);
}
static void
dovalue(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
size_t i, start, end;
int clr;
char *key, *val;
if (TEXICMD_SET == cmd) {
/*
* If we're going to set a value, then first parse the
* key and value from the input stream.
* Disallow empty keys.
*/
while (*pos < sz && isws(buf[*pos]))
advance(p, buf, pos);
for (start = end = *pos; end < sz; end++)
if (ismspace(buf[end]))
break;
if (start == end)
return;
key = malloc(end - start + 1);
if (NULL == key) {
perror(NULL);
exit(EXIT_FAILURE);
}
memcpy(key, &buf[start], end - start);
key[end - start] = '\0';
advanceto(p, buf, pos, end);
while (*pos < sz && isws(buf[*pos]))
advance(p, buf, pos);
for (start = end = *pos; end < sz; end++)
if ('\n' == buf[end])
break;
val = malloc(end - start + 1);
if (NULL == val) {
perror(NULL);
exit(EXIT_FAILURE);
}
memcpy(val, &buf[start], end - start);
val[end - start] = '\0';
/*
* Now look up the key in our table of existing keys.
* If we find it, then free the local key and replace
* the value (freeing the existing) of the existing.
* If not, reallocate the structure.
*/
for (i = 0; i < p->valsz; i++)
if (0 == strcmp(p->vals[i].key, key))
break;
if (i < p->valsz) {
free(key);
free(p->vals[i].value);
p->vals[i].value = val;
} else {
p->vals = realloc(p->vals,
(p->valsz + 1) *
sizeof(struct texivalue));
if (NULL == p->vals) {
perror(NULL);
exit(EXIT_FAILURE);
}
p->vals[p->valsz].key = key;
p->vals[p->valsz].value = val;
p->valsz++;
}
advanceeoln(p, buf, sz, pos, 1);
} else if (TEXICMD_VALUE == cmd) {
/*
* First, parse out the key from the stream, which is
* just the material within the quotes.
*/
while (*pos < sz && '{' != buf[*pos])
advance(p, buf, pos);
if (*pos == sz)
return;
advance(p, buf, pos);
start = *pos;
while (*pos < sz && '}' != buf[*pos])
advance(p, buf, pos);
if ((end = *pos) < sz)
advance(p, buf, pos);
key = malloc(end - start + 1);
if (NULL == key) {
perror(NULL);
exit(EXIT_FAILURE);
}
memcpy(key, &buf[start], end - start);
key[end - start] = '\0';
/*
* Next, look up the key in our table.
* If it exists, print it out, being mindful all the
* while of prior whitespace.
* If it doesn't, print out a message.
*/
for (i = 0; i < p->valsz; i++)
if (0 == strcmp(p->vals[i].key, key))
break;
if (p->seenws)
texiputchar(p, ' ');
p->seenws = 0;
if (i == p->valsz || NULL == p->vals[i].value) {
texiputchars(p, "{No value for \\(lq");
texiputchars(p, key);
texiputchars(p, "\\(rq}");
} else
texiputchars(p, p->vals[i].value);
free(key);
} else if (TEXICMD_CLEAR == cmd) {
key = lineargdup(p, buf, sz, pos);
for (i = 0; i < p->valsz; i++)
if (0 == strcmp(p->vals[i].key, key)) {
free(p->vals[i].value);
p->vals[i].value = NULL;
break;
}
free(key);
} else if (TEXICMD_IFCLEAR == cmd) {
key = lineargdup(p, buf, sz, pos);
for (i = 0; i < p->valsz; i++)
if (0 == strcmp(p->vals[i].key, key))
break;
free(key);
clr = i < p->valsz && NULL != p->vals[i].value;
if (clr)
p->ign++;
parseto(p, buf, sz, pos, texitoks[cmd].tok);
if (clr)
p->ign--;
}
}
static void
dolink(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
int c;
switch (cmd) {
case (TEXICMD_EMAIL):
teximacroopen(p, "Mt");
break;
case (TEXICMD_UREF):
case (TEXICMD_URL):
teximacroopen(p, "Lk");
break;
case (TEXICMD_XREF):
texiputchars(p, "See Section");
teximacroopen(p, "Qq");
break;
case (TEXICMD_PXREF):
texiputchars(p, "see Section");
teximacroopen(p, "Qq");
break;
default:
abort();
}
c = parsearg(p, buf, sz, pos, 0);
p->ign++;
while (c > 0)
c = parsearg(p, buf, sz, pos, 1);
p->ign--;
texipunctuate(p, buf, sz, pos);
teximacroclose(p);
}
static void
doignargn(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
int c;
c = parsearg(p, buf, sz, pos, 0);
p->ign++;
while (c > 0)
c = parsearg(p, buf, sz, pos, 1);
p->ign--;
}
/*
* Sections can be made subsections and so on by way of the
* @raiseections and @lowersections commands.
* Perform this check here and return the actual section number adjusted
* to the raise level.
*/
static int
sectioner(struct texi *p, int sec)
{
if ((sec -= p->secoffs) < 0) {
texiwarn(p, "section below minimum, clamping");
return(0);
} else if (sec >= SECTSZ) {
texiwarn(p, "section above maximum, clamping");
return(SECTSZ - 1);
}
return(sec);
}
static void
dosubsubsection(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
int sec;
sec = sectioner(p, 3);
/* We don't have a subsubsubsection, so make one up. */
texivspace(p);
teximacroopen(p, sects[sec]);
parseeoln(p, buf, sz, pos);
teximacroclose(p);
texivspace(p);
}
static void
dosubsection(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
int sec;
sec = sectioner(p, 2);
if (p->outmacro)
texierr(p, "\"%s\" in open line scope!?", sects[sec]);
else if (p->literal)
texierr(p, "\"%s\" in a literal scope!?", sects[sec]);
/* We don't have a subsubsection, so make one up. */
texivspace(p);
teximacroopen(p, sects[sec]);
parseeoln(p, buf, sz, pos);
teximacroclose(p);
texivspace(p);
}
static void
dosecoffs(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (TEXICMD_RAISESECTIONS == cmd)
p->secoffs++;
else
p->secoffs--;
}
static void
dosection(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
int sec;
switch (cmd) {
case (TEXICMD_APPENDIX):
case (TEXICMD_CHAPTER):
case (TEXICMD_TOP):
case (TEXICMD_UNNUMBERED):
sec = sectioner(p, 0);
break;
case (TEXICMD_APPENDIXSEC):
case (TEXICMD_HEADING):
case (TEXICMD_SECTION):
case (TEXICMD_UNNUMBEREDSEC):
sec = sectioner(p, 1);
break;
default:
abort();
}
if (p->outmacro)
texierr(p, "\"%s\" in open line scope!?", sects[sec]);
else if (p->literal)
texierr(p, "\"%s\" in a literal scope!?", sects[sec]);
teximacroopen(p, sects[sec]);
parseeoln(p, buf, sz, pos);
teximacroclose(p);
p->seenvs = 1;
}
static void
dosp(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
texivspace(p);
/* FIXME: ignore and parseeoln. */
advanceeoln(p, buf, sz, pos, 1);
}
static void
dotop(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
const char *cp;
time_t t;
char date[32];
/*
* Here we print our standard mdoc(7) prologue.
* We use the title set with @settitle for the `Nd' description
* and the source document filename (the first one as invoked on
* the command line) for the title.
* The date is set to the current date.
*/
t = time(NULL);
strftime(date, sizeof(date), "%F", localtime(&t));
p->ign--;
teximacroopen(p, "Dd");
texiputchars(p, date);
teximacroclose(p);
teximacroopen(p, "Dt");
for (cp = p->title; '\0' != *cp; cp++)
texiputchar(p, toupper(*cp));
texiputchars(p, " 7");
teximacroclose(p);
teximacro(p, "Os");
teximacro(p, "Sh NAME");
teximacroopen(p, "Nm");
texiputchars(p, p->title);
teximacroclose(p);
teximacroopen(p, "Nd");
texiputchars(p, NULL != p->subtitle ?
p->subtitle : "Unknown description");
teximacroclose(p);
p->seenvs = 1;
dosection(p, cmd, buf, sz, pos);
}
static void
doitem(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
/* Multitable is using raw tbl(7). */
if (TEXILIST_TABLE == p->list) {
texiputchar(p, '\n');
return;
}
if (p->outmacro)
texierr(p, "item in open line scope!?");
else if (p->literal)
texierr(p, "item in a literal scope!?");
switch (p->list) {
case (TEXILIST_ITEM):
teximacroopen(p, "It");
break;
case (TEXILIST_NOITEM):
teximacro(p, "It");
break;
default:
texivspace(p);
break;
}
/* Trick so we don't start with Pp. */
p->seenvs = 1;
parseeoln(p, buf, sz, pos);
if (TEXILIST_ITEM == p->list)
teximacroclose(p);
else if (p->outcol > 0)
texiputchar(p, '\n');
}
static void
dotab(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
/* This command is only useful in @multitable. */
if (TEXILIST_TABLE == p->list)
texiputchar(p, '\t');
}
static void
domultitable(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
enum texilist sv = p->list;
enum texicmd type;
size_t i, end, columns;
p->list = TEXILIST_TABLE;
teximacro(p, "TS");
columns = 0;
/* Advance to the first argument... */
while (*pos < sz && isws(buf[*pos]))
advance(p, buf, pos);
/* Make sure we don't print anything when scanning. */
p->ign++;
if ('@' == buf[*pos]) {
/*
* Look for @columnfractions.
* We ignore these, but we do use the number of
* arguments to set the number of columns that we'll
* have.
*/
type = texicmd(p, buf, *pos, sz, &end);
advanceto(p, buf, pos, end);
if (TEXICMD_COLUMNFRACTIONS != type)
texierr(p, "unknown multitable type");
while (*pos < sz && '\n' != buf[*pos]) {
while (*pos < sz && isws(buf[*pos]))
advance(p, buf, pos);
while (*pos < sz && ! isws(buf[*pos])) {
if ('\n' == buf[*pos])
break;
advance(p, buf, pos);
}
columns++;
}
} else
/*
* We have arguments.
* We could parse these, but it's easier to just let
* tbl(7) figure it out.
* So use this only to count arguments.
*/
while (parselinearg(p, buf, sz, pos) > 0)
columns++;
p->ign--;
/* Left-justify each table entry. */
for (i = 0; i < columns; i++) {
if (i > 0)
texiputchar(p, ' ');
texiputchar(p, 'l');
}
texiputchars(p, ".\n");
p->outmacro++;
parseto(p, buf, sz, pos, texitoks[cmd].tok);
p->outmacro--;
teximacro(p, "TE");
p->list = sv;
}
static void
dotable(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
enum texilist sv = p->list;
p->list = TEXILIST_ITEM;
teximacro(p, "Bl -tag -width Ds");
/* FIXME: ignore and parseeoln. */
advanceeoln(p, buf, sz, pos, 1);
p->seenvs = 1;
parseto(p, buf, sz, pos, texitoks[cmd].tok);
teximacro(p, "El");
p->list = sv;
}
static void
doenumerate(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
enum texilist sv = p->list;
p->list = TEXILIST_NOITEM;
teximacro(p, "Bl -enum");
p->seenvs = 1;
/* FIXME: ignore and parseeoln. */
advanceeoln(p, buf, sz, pos, 1);
parseto(p, buf, sz, pos, "enumerate");
teximacro(p, "El");
p->list = sv;
}
static void
doitemize(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
enum texilist sv = p->list;
p->list = TEXILIST_NOITEM;
teximacro(p, "Bl -bullet");
p->seenvs = 1;
/* FIXME: ignore and parseeoln. */
advanceeoln(p, buf, sz, pos, 1);
parseto(p, buf, sz, pos, "itemize");
teximacro(p, "El");
p->list = sv;
}
static void
doignbracket(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
p->ign++;
parsebracket(p, buf, sz, pos);
p->ign--;
}
static void
doignline(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
/* FIXME: ignore and parseeoln. */
advanceeoln(p, buf, sz, pos, 1);
}
/*
* Parse colon-separated directories from "cp" (if not NULL) and returns
* the array of pointers.
* Prepends "base" to the array.
* This does NOT sanitise the directories!
*/
static char **
parsedirs(const char *base, const char *cp, size_t *sz)
{
char *tok, *str, *tofree;
const char *cpp;
size_t i;
char **dirs;
*sz = NULL != (cpp = cp) ? 2 : 1;
if (*sz > 1)
for ( ; NULL != (cpp = strchr(cpp, ':')); (*sz)++)
cpp++;
dirs = calloc(*sz, sizeof(char *));
if (NULL == dirs) {
perror(NULL);
exit(EXIT_FAILURE);
} else if (NULL == (dirs[0] = strdup(base))) {
perror(NULL);
exit(EXIT_FAILURE);
}
if (NULL == cp)
return(dirs);
if (NULL == (tofree = tok = str = strdup(cp))) {
perror(NULL);
exit(EXIT_FAILURE);
}
for (i = 1; NULL != (tok = strsep(&str, ":")); i++)
if (NULL == (dirs[i] = strdup(tok))) {
perror(NULL);
exit(EXIT_FAILURE);
}
free(tofree);
return(dirs);
}
int
main(int argc, char *argv[])
{
struct texi texi;
int c;
char *path, *dir;
const char *progname, *Idir, *cp;
progname = strrchr(argv[0], '/');
if (progname == NULL)
progname = argv[0];
else
++progname;
memset(&texi, 0, sizeof(struct texi));
Idir = NULL;
while (-1 != (c = getopt(argc, argv, "I:")))
switch (c) {
case ('I'):
Idir = optarg;
break;
default:
goto usage;
}
argv += optind;
if (0 == (argc -= optind))
goto usage;
if (NULL == (path = strdup(argv[0]))) {
perror(NULL);
exit(EXIT_FAILURE);
} else if (NULL == (dir = dirname(path))) {
perror(argv[0]);
free(path);
exit(EXIT_FAILURE);
}
free(path);
if (NULL != (cp = strrchr(argv[0], '/')))
texi.title = strdup(cp + 1);
else
texi.title = strdup(argv[0]);
if (NULL == texi.title) {
perror(NULL);
exit(EXIT_FAILURE);
} else if (NULL != (path = strchr(texi.title, '.')))
*path = '\0';
texi.ign = 1;
texi.dirs = parsedirs(dir, Idir, &texi.dirsz);
parsefile(&texi, argv[0], 1);
/* We shouldn't get here. */
texiexit(&texi);
return(EXIT_FAILURE);
usage:
fprintf(stderr, "usage: %s [-Idirs] file\n", progname);
return(EXIT_FAILURE);
}