File: [cvsweb.bsd.lv] / texi2mdoc / main.c (download)
Revision 1.6, Wed Feb 18 11:03:04 2015 UTC (9 years, 4 months ago) by kristaps
Branch: MAIN
Changes since 1.5: +3 -2 lines
Compile on OpenBSD/Linux.
|
/* $Id: main.c,v 1.6 2015/02/18 11:03:04 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 <unistd.h>
/*
* This defines each one of the Texinfo commands that we understand.
* Obviously this only refers to native commands; overriden names are a
* different story.
*/
enum texicmd {
TEXICMD_ACRONYM,
TEXICMD_A4PAPER,
TEXICMD_ANCHOR,
TEXICMD_APPENDIX,
TEXICMD_APPENDIXSEC,
TEXICMD_ASTERISK,
TEXICMD_AT,
TEXICMD_AUTHOR,
TEXICMD_BANG,
TEXICMD_BYE,
TEXICMD_CENTER,
TEXICMD_CHAPTER,
TEXICMD_CINDEX,
TEXICMD_CITE,
TEXICMD_CODE,
TEXICMD_COLON,
TEXICMD_COMMAND,
TEXICMD_COMMENT,
TEXICMD_COMMENT_LONG,
TEXICMD_CONTENTS,
TEXICMD_COPYING,
TEXICMD_COPYRIGHT,
TEXICMD_DEFTYPEFN,
TEXICMD_DEFTYPEFNX,
TEXICMD_DEFTYPEFUN,
TEXICMD_DEFTYPEFUNX,
TEXICMD_DEFTYPEVAR,
TEXICMD_DEFTYPEVR,
TEXICMD_DETAILMENU,
TEXICMD_DFN,
TEXICMD_DIRCATEGORY,
TEXICMD_DIRENTRY,
TEXICMD_DISPLAY,
TEXICMD_DOTS,
TEXICMD_EMAIL,
TEXICMD_EMPH,
TEXICMD_END,
TEXICMD_ENUMERATE,
TEXICMD_ENV,
TEXICMD_EXAMPLE,
TEXICMD_FILE,
TEXICMD_GROUP,
TEXICMD_HEADING,
TEXICMD_HEADINGS,
TEXICMD_HYPHEN,
TEXICMD_I,
TEXICMD_IFCLEAR,
TEXICMD_IFHTML,
TEXICMD_IFINFO,
TEXICMD_IFNOTTEX,
TEXICMD_IFTEX,
TEXICMD_IFSET,
TEXICMD_IMAGE,
TEXICMD_INCLUDE,
TEXICMD_INSERTCOPYING,
TEXICMD_ITEM,
TEXICMD_ITEMIZE,
TEXICMD_KBD,
TEXICMD_LATEX,
TEXICMD_MATH,
TEXICMD_MENU,
TEXICMD_NEWLINE,
TEXICMD_NODE,
TEXICMD_NOINDENT,
TEXICMD_QUESTIONMARK,
TEXICMD_QUOTATION,
TEXICMD_PAGE,
TEXICMD_PARINDENT,
TEXICMD_PRINTINDEX,
TEXICMD_REF,
TEXICMD_SAMP,
TEXICMD_SECTION,
TEXICMD_SET,
TEXICMD_SETCHAPNEWPAGE,
TEXICMD_SETFILENAME,
TEXICMD_SETTITLE,
TEXICMD_SP,
TEXICMD_SPACE,
TEXICMD_SMALLEXAMPLE,
TEXICMD_SQUIGGLE_LEFT,
TEXICMD_SQUIGGLE_RIGHT,
TEXICMD_SUBSECTION,
TEXICMD_SUBTITLE,
TEXICMD_TAB,
TEXICMD_TABLE,
TEXICMD_TEX,
TEXICMD_TEXSYM,
TEXICMD_TITLE,
TEXICMD_TITLEFONT,
TEXICMD_TITLEPAGE,
TEXICMD_TOP,
TEXICMD_UNNUMBERED,
TEXICMD_UNNUMBEREDSEC,
TEXICMD_UREF,
TEXICMD_URL,
TEXICMD_VAR,
TEXICMD_W,
TEXICMD__MAX
};
/*
* The file currently being parsed.
* This keeps track of our location within that file.
*/
struct texifile {
const char *name; /* name of the file */
size_t line; /* current line (from zero) */
size_t col; /* current column in line (from zero) */
char *map; /* mmap'd file */
size_t mapsz; /* size of mmap */
};
struct texi;
/*
* Callback for functions implementing texi commands.
*/
typedef void (*texicmdfp)(struct texi *,
enum texicmd, const char *, size_t, size_t *);
/*
* Describes Texinfo commands, whether native or overriden.
*/
struct texitok {
texicmdfp fp; /* callback (or NULL if none) */
const char *tok; /* name of the token */
size_t len; /* strlen(tok) */
};
enum texilist {
TEXILIST_NONE = 0,
TEXILIST_ITEM,
TEXILIST_NOITEM,
};
/*
* The main parse structure.
* This keeps any necessary information handy.
*/
struct texi {
struct texifile files[64]; /* stack of open files */
size_t filepos; /* number of open files */
size_t outcol; /* column in output line */
char **dirs; /* texi directories */
size_t dirsz; /* number of texi directories */
enum texilist list;
int outmacro; /* whether output is in line macro */
int seenws; /* whitespace has been ignored */
int ign; /* don't print anything */
int literal;
};
/* FIXME: don't use this crap. */
#define ismpunct(_x) \
('.' == (_x) || \
',' == (_x) || \
';' == (_x))
#define isws(_x) \
(' ' == (_x) || '\t' == (_x))
static void doarg1(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 dochapter(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void docommand(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dodeftypefun(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void dodeftypevar(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 doemph(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 doenv(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 dofile(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 doinclude(struct texi *, enum texicmd, const char *, size_t, size_t *);
static void doitalic(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 doliteral(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 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 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 dosymbol(struct texi *, enum texicmd, const char *, size_t, size_t *);
static const struct texitok texitoks[TEXICMD__MAX] = {
{ doarg1, "acronym", 7 }, /* TEXICMD_ACRONYM */
{ doignline, "afourpaper", 10 }, /* TEXICMD_A4PAPER */
{ doignbracket, "anchor", 6 }, /* TEXICMD_ANCHOR */
{ dochapter, "appendix", 8 }, /* TEXICMD_APPENDIX */
{ dochapter, "appendixsec", 11 }, /* TEXICMD_APPENDIXSEC */
{ dosymbol, "*", 1 }, /* TEXICMD_ASTERISK */
{ dosymbol, "@", 1 }, /* TEXICMD_AT */
{ doignline, "author", 6 }, /* TEXICMD_AUTHOR */
{ dosymbol, "!", 1 }, /* TEXICMD_BANG */
{ dobye, "bye", 3 }, /* TEXICMD_BYE */
{ doignline, "center", 5 }, /* TEXICMD_CENTER */
{ dochapter, "chapter", 7 }, /* TEXICMD_CHAPTER */
{ doignline, "cindex", 6 }, /* TEXICMD_CINDEX */
{ doliteral, "code", 4 }, /* TEXICMD_CODE */
{ doitalic, "cite", 4 }, /* TEXICMD_CITE */
{ dosymbol, ":", 1 }, /* TEXICMD_COLON */
{ docommand, "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 */
{ dodeftypefun, "deftypefn", 9 }, /* TEXICMD_DEFTYPEFN */
{ dodeftypefun, "deftypefnx", 10 }, /* TEXICMD_DEFTYPEFNX */
{ dodeftypefun, "deftypefun", 10 }, /* TEXICMD_DEFTYPEFUN */
{ dodeftypefun, "deftypefunx", 11 }, /* TEXICMD_DEFTYPEFUNX */
{ dodeftypevar, "deftypevar", 10 }, /* TEXICMD_DEFTYPEVAR */
{ dodeftypevar, "deftypevr", 9 }, /* TEXICMD_DEFTYPEVR */
{ doignblock, "detailmenu", 10 }, /* TEXICMD_DETAILMENU */
{ doitalic, "dfn", 3 }, /* TEXICMD_DFN */
{ doignline, "dircategory", 11 }, /* TEXICMD_DIRCATEGORY */
{ doignblock, "direntry", 8 }, /* TEXICMD_DIRENTRY */
{ dodisplay, "display", 7 }, /* TEXICMD_DISPLAY */
{ dosymbol, "dots", 4 }, /* TEXICMD_DOTS */
{ doarg1, "email", 5 }, /* TEXICMD_EMAIL */
{ doemph, "emph", 4 }, /* TEXICMD_EMPH */
{ NULL, "end", 3 }, /* TEXICMD_END */
{ doenumerate, "enumerate", 9 }, /* TEXICMD_ENUMERATE */
{ doenv, "env", 3 }, /* TEXICMD_ENV */
{ doexample, "example", 7 }, /* TEXICMD_EXAMPLE */
{ dofile, "file", 4 }, /* TEXICMD_FILE */
{ doblock, "group", 5 }, /* TEXICMD_GROUP */
{ dosection, "heading", 7 }, /* TEXICMD_HEADING */
{ doignline, "headings", 8 }, /* TEXICMD_HEADINGS */
{ dosymbol, "-", 1 }, /* TEXICMD_HYPHEN */
{ doitalic, "i", 1 }, /* TEXICMD_I */
{ doignblock, "ifclear", 7 }, /* TEXICMD_IFCLEAR */
{ doignblock, "ifhtml", 6 }, /* TEXICMD_IFHTML */
{ doignblock, "ifinfo", 6 }, /* TEXICMD_IFINFO */
{ doblock, "ifnottex", 8 }, /* TEXICMD_IFNOTTEX */
{ doignblock, "iftex", 5 }, /* TEXICMD_IFTEX */
{ doignblock, "ifset", 5 }, /* TEXICMD_IFSET */
{ doignbracket, "image", 5 }, /* TEXICMD_IMAGE */
{ doinclude, "include", 7 }, /* TEXICMD_INCLUDE */
{ doignline, "insertcopying", 13 }, /* TEXICMD_INSERTCOPYING */
{ doitem, "item", 4 }, /* TEXICMD_ITEM */
{ doitemize, "itemize", 7 }, /* TEXICMD_ITEMIZE */
{ doliteral, "kbd", 3 }, /* TEXICMD_KBD */
{ dosymbol, "LaTeX", 5 }, /* TEXICMD_LATEX */
{ domath, "math", 4 }, /* TEXICMD_MATH */
{ doignblock, "menu", 4 }, /* TEXICMD_MENU */
{ dosymbol, "\n", 1 }, /* TEXICMD_NEWLINE */
{ doignline, "node", 4 }, /* TEXICMD_NODE */
{ doignline, "noindent", 8 }, /* TEXICMD_NOINDENT */
{ dosymbol, "?", 1 }, /* TEXICMD_QUESTIONMARK */
{ doquotation, "quotation", 9 }, /* TEXICMD_QUOTATION */
{ doignline, "page", 4 }, /* TEXICMD_PAGE */
{ doignline, "paragraphindent", 14 }, /* TEXICMD_PARINDENT */
{ doignline, "printindex", 10 }, /* TEXICMD_PRINTINDEX */
{ dobracket, "ref", 3 }, /* TEXICMD_REF */
{ doliteral, "samp", 4 }, /* TEXICMD_SAMP */
{ dosection, "section", 7 }, /* TEXICMD_SECTION */
{ doignline, "set", 3 }, /* TEXICMD_SET */
{ doignline, "setchapternewpage", 17 }, /* TEXICMD_SETCHAPNEWPAGE */
{ doignline, "setfilename", 11 }, /* TEXICMD_SETFILENAME */
{ doignline, "settitle", 8 }, /* TEXICMD_SETTITLE */
{ dosp, "sp", 2 }, /* TEXICMD_SP */
{ dosymbol, " ", 1 }, /* TEXICMD_SPACE */
{ doexample, "smallexample", 12 }, /* TEXICMD_SMALLEXAMPLE */
{ dosymbol, "{", 1 }, /* TEXICMD_SQUIGGLE_LEFT */
{ dosymbol, "}", 1 }, /* TEXICMD_SQUIGGLE_RIGHT */
{ dosubsection, "subsection", 10 }, /* TEXICMD_SUBSECTION */
{ doignline, "subtitle", 8 }, /* TEXICMD_SUBTITLE */
{ dosymbol, "\t", 1 }, /* TEXICMD_TAB */
{ dotable, "table", 5 }, /* TEXICMD_TABLE */
{ doignblock, "tex", 3 }, /* TEXICMD_TEX */
{ dosymbol, "TeX", 3 }, /* TEXICMD_TEXSYM */
{ doignline, "title", 5 }, /* TEXICMD_TITLE */
{ dobracket, "titlefont", 9 }, /* TEXICMD_TITLEFONT */
{ doignblock, "titlepage", 9 }, /* TEXICMD_TITLEPAGE */
{ dotop, "top", 3 }, /* TEXICMD_TOP */
{ dochapter, "unnumbered", 10 }, /* TEXICMD_UNNUMBERED */
{ dosection, "unnumberedsec", 13 }, /* TEXICMD_UNNUMBEREDSEC */
{ doarg1, "uref", 4 }, /* TEXICMD_UREF */
{ doarg1, "url", 3 }, /* TEXICMD_URL */
{ doliteral, "var", 3 }, /* TEXICMD_VAR */
{ dobracket, "w", 1 }, /* TEXICMD_W */
};
/*
* Unmap the top-most file that we're using.
*/
static void
texifilepop(struct texi *p)
{
struct texifile *f;
assert(p->filepos > 0);
f = &p->files[--p->filepos];
munmap(f->map, f->mapsz);
}
/*
* Unmap all files that we're currently using.
* The utility should exit(...) after this is called.
*/
static void
texiexit(struct texi *p)
{
size_t i;
if (p->outcol)
putchar('\n');
while (p->filepos > 0)
texifilepop(p);
for (i = 0; i < p->dirsz; i++)
free(p->dirs[i]);
free(p->dirs);
}
/*
* Fatal error: unmap all files and exit.
* The "errstring" is passed to perror(3).
*/
static void
texiabort(struct texi *p, const char *errstring)
{
perror(errstring);
texiexit(p);
exit(EXIT_FAILURE);
}
/*
* Print a generic warning message (to stderr) tied to our current
* location in the parse sequence.
*/
static void
texiwarn(const struct texi *p, const char *fmt, ...)
{
va_list ap;
fprintf(stderr, "%s:%zu:%zu: warning: ",
p->files[p->filepos - 1].name,
p->files[p->filepos - 1].line + 1,
p->files[p->filepos - 1].col + 1);
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fputc('\n', stderr);
}
static void
texierr(struct texi *p, const char *fmt, ...)
{
va_list ap;
fprintf(stderr, "%s:%zu:%zu: error: ",
p->files[p->filepos - 1].name,
p->files[p->filepos - 1].line + 1,
p->files[p->filepos - 1].col + 1);
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fputc('\n', stderr);
texiexit(p);
exit(EXIT_FAILURE);
}
/*
* Put a single data character.
* This MUST NOT be a mdoc(7) command: it should be free text that's
* outputted to the screen.
*/
static void
texiputchar(struct texi *p, char c)
{
if (p->ign)
return;
putchar(c);
if ('\n' == c) {
p->outcol = 0;
p->seenws = 0;
} else
p->outcol++;
}
/*
* Put multiple characters (see texiputchar()).
*/
static void
texiputchars(struct texi *p, const char *s)
{
while ('\0' != *s)
texiputchar(p, *s++);
}
/*
* Put an mdoc(7) command without the trailing newline.
* This should ONLY be used for mdoc(7) commands!
*/
static void
teximacroclose(struct texi *p)
{
if (0 == --p->outmacro)
texiputchar(p, '\n');
}
/*
* Put an mdoc(7) command without the trailing newline.
* This should ONLY be used for mdoc(7) commands!
*/
static void
teximacroopen(struct texi *p, const char *s)
{
if (p->outcol && 0 == p->outmacro)
texiputchar(p, '\n');
if (0 == p->outmacro)
texiputchar(p, '.');
else
texiputchar(p, ' ');
texiputchars(p, s);
texiputchar(p, ' ');
p->outmacro++;
p->seenws = 0;
}
/*
* Put an mdoc(7) command with the trailing newline.
* This should ONLY be used for mdoc(7) commands!
*/
static void
teximacro(struct texi *p, const char *s)
{
if (p->outmacro)
texierr(p, "\"%s\" in open line scope!?", s);
else if (p->literal)
texierr(p, "\"%s\" in a literal scope!?", s);
if (p->outcol)
texiputchar(p, '\n');
texiputchar(p, '.');
texiputchars(p, s);
texiputchar(p, '\n');
}
/*
* Advance by a single byte in the input stream.
*/
static void
advance(struct texi *p, const char *buf, size_t *pos)
{
if ('\n' == buf[*pos]) {
p->files[p->filepos - 1].line++;
p->files[p->filepos - 1].col = 0;
} else
p->files[p->filepos - 1].col++;
(*pos)++;
}
/*
* Advance to the next non-whitespace word in the input stream.
* If we're in literal mode, then print all of the whitespace as we're
* doing so.
*/
static size_t
advancenext(struct texi *p, const char *buf, size_t sz, size_t *pos)
{
if (p->literal) {
while (*pos < sz && isspace(buf[*pos])) {
if (*pos && '\n' == buf[*pos] &&
'\\' == buf[*pos - 1])
texiputchar(p, 'e');
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
return(*pos);
}
while (*pos < sz && isspace(buf[*pos])) {
p->seenws = 1;
/*
* If it looks like we've printed a double-line, then
* output a paragraph.
* FIXME: this is stupid.
*/
if (*pos && '\n' == buf[*pos] &&
'\n' == buf[*pos - 1])
teximacro(p, "Pp");
advance(p, buf, pos);
}
return(*pos);
}
/*
* Advance to the EOLN in the input stream.
*/
static size_t
advanceeoln(struct texi *p, const char *buf,
size_t sz, size_t *pos, int consumenl)
{
while (*pos < sz && '\n' != buf[*pos])
advance(p, buf, pos);
if (*pos < sz && consumenl)
advance(p, buf, pos);
return(*pos);
}
/*
* Advance to position "end", which is an absolute position in the
* current buffer greater than or equal to the current position.
*/
static void
advanceto(struct texi *p, const char *buf, size_t *pos, size_t end)
{
assert(*pos <= end);
while (*pos < end)
advance(p, buf, pos);
}
/*
* Output a free-form word in the input stream, progressing to the next
* command or white-space.
* This also will advance the input stream.
*/
static void
texiword(struct texi *p, const char *buf, size_t sz, size_t *pos)
{
/*
* XXX: if we're in literal mode, then we shouldn't do any
* reflowing of text here.
*/
if (0 == p->outmacro && p->outcol > 72 && 0 == p->literal)
texiputchar(p, '\n');
if (p->seenws && p->outcol && 0 == p->literal)
texiputchar(p, ' ');
p->seenws = 0;
while (*pos < sz && ! isspace(buf[*pos])) {
switch (buf[*pos]) {
case ('@'):
case ('}'):
case ('{'):
return;
}
if (*pos < sz - 1 &&
'`' == buf[*pos] &&
'`' == buf[*pos + 1]) {
texiputchars(p, "\\(lq");
advance(p, buf, pos);
} else if (*pos < sz - 1 &&
'\'' == buf[*pos] &&
'\'' == buf[*pos + 1]) {
texiputchars(p, "\\(rq");
advance(p, buf, pos);
} else
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
}
static enum texicmd
texicmd(struct texi *p, const char *buf,
size_t pos, size_t sz, size_t *end)
{
size_t i, len;
assert('@' == buf[pos]);
if (++pos >= sz)
return(TEXICMD__MAX);
/* Alphabetic commands are special. */
if ( ! isalpha(buf[pos])) {
*end = pos + 1;
for (i = 0; i < TEXICMD__MAX; i++) {
if (1 != texitoks[i].len)
continue;
if (0 == strncmp(texitoks[i].tok, &buf[pos], 1))
return(i);
}
texiwarn(p, "bad command: @%c", buf[pos]);
return(TEXICMD__MAX);
}
for (*end = pos; *end < sz && ! isspace(buf[*end]); (*end)++)
if ((*end > pos && ('@' == buf[*end] ||
'{' == buf[*end] || '}' == buf[*end])))
break;
len = *end - pos;
for (i = 0; i < TEXICMD__MAX; i++) {
if (len != texitoks[i].len)
continue;
if (0 == strncmp(texitoks[i].tok, &buf[pos], len))
return(i);
}
texiwarn(p, "bad command: @%.*s", (int)len, &buf[pos]);
return(TEXICMD__MAX);
}
static void
parseeof(struct texi *p, const char *buf, size_t sz)
{
size_t pos = 0;
enum texicmd cmd;
size_t end;
while ((pos = advancenext(p, buf, sz, &pos)) < sz) {
switch (buf[pos]) {
case ('}'):
if (0 == p->ign)
texiwarn(p, "unexpected \"}\"");
advance(p, buf, &pos);
continue;
case ('{'):
if (0 == p->ign)
texiwarn(p, "unexpected \"{\"");
advance(p, buf, &pos);
continue;
case ('@'):
break;
default:
texiword(p, buf, sz, &pos);
continue;
}
cmd = texicmd(p, buf, pos, sz, &end);
advanceto(p, buf, &pos, end);
if (TEXICMD__MAX == cmd)
continue;
if (NULL != texitoks[cmd].fp)
(*texitoks[cmd].fp)(p, cmd, buf, sz, &pos);
}
}
static void
parsebracket(struct texi *p, const char *buf, size_t sz, size_t *pos)
{
size_t end;
enum texicmd cmd;
while (*pos < sz && isspace(buf[*pos]))
advance(p, buf, pos);
if (*pos == sz || '{' != buf[*pos])
return;
advance(p, buf, pos);
while ((*pos = advancenext(p, buf, sz, pos)) < sz) {
switch (buf[*pos]) {
case ('}'):
advance(p, buf, pos);
return;
case ('{'):
if (0 == p->ign)
texiwarn(p, "unexpected \"{\"");
advance(p, buf, pos);
continue;
case ('@'):
break;
default:
texiword(p, buf, sz, pos);
continue;
}
cmd = texicmd(p, buf, *pos, sz, &end);
advanceto(p, buf, pos, end);
if (TEXICMD__MAX == cmd)
continue;
if (NULL != texitoks[cmd].fp)
(*texitoks[cmd].fp)(p, cmd, buf, sz, pos);
}
}
/*
* This should be invoked when we're on a macro line and want to process
* to the end of the current input line, doing all of our macros along
* the way.
*/
static void
parseeoln(struct texi *p, const char *buf, size_t sz, size_t *pos)
{
size_t end;
enum texicmd cmd;
assert(0 == p->literal);
while (*pos < sz && '\n' != buf[*pos]) {
while (*pos < sz && isws(buf[*pos])) {
p->seenws = 1;
advance(p, buf, pos);
}
switch (buf[*pos]) {
case ('}'):
if (0 == p->ign)
texiwarn(p, "unexpected \"}\"");
advance(p, buf, pos);
continue;
case ('{'):
if (0 == p->ign)
texiwarn(p, "unexpected \"{\"");
advance(p, buf, pos);
continue;
case ('@'):
break;
default:
texiword(p, buf, sz, pos);
continue;
}
cmd = texicmd(p, buf, *pos, sz, &end);
advanceto(p, buf, pos, end);
if (TEXICMD__MAX == cmd)
continue;
if (NULL != texitoks[cmd].fp)
(*texitoks[cmd].fp)(p, cmd, buf, sz, pos);
}
}
static void
parsesingle(struct texi *p, const char *buf, size_t sz, size_t *pos)
{
size_t end;
enum texicmd cmd;
if ((*pos = advancenext(p, buf, sz, pos)) >= sz)
return;
switch (buf[*pos]) {
case ('}'):
if (0 == p->ign)
texiwarn(p, "unexpected \"}\"");
advance(p, buf, pos);
return;
case ('{'):
if (0 == p->ign)
texiwarn(p, "unexpected \"{\"");
advance(p, buf, pos);
return;
case ('@'):
break;
default:
texiword(p, buf, sz, pos);
return;
}
cmd = texicmd(p, buf, *pos, sz, &end);
advanceto(p, buf, pos, end);
if (TEXICMD__MAX == cmd)
return;
if (NULL != texitoks[cmd].fp)
(*texitoks[cmd].fp)(p, cmd, buf, sz, pos);
}
static void
parseto(struct texi *p, const char *buf,
size_t sz, size_t *pos, const char *endtoken)
{
size_t end;
enum texicmd cmd;
size_t endtoksz;
endtoksz = strlen(endtoken);
assert(endtoksz > 0);
while ((*pos = advancenext(p, buf, sz, pos)) < sz) {
switch (buf[*pos]) {
case ('}'):
if (0 == p->ign)
texiwarn(p, "unexpected \"}\"");
advance(p, buf, pos);
continue;
case ('{'):
if (0 == p->ign)
texiwarn(p, "unexpected \"{\"");
advance(p, buf, pos);
continue;
case ('@'):
break;
default:
texiword(p, buf, sz, pos);
continue;
}
cmd = texicmd(p, buf, *pos, sz, &end);
advanceto(p, buf, pos, end);
if (TEXICMD_END == cmd) {
while (*pos < sz && isws(buf[*pos]))
advance(p, buf, pos);
/*
* FIXME: skip tabs and also check the full
* word, not just its initial substring!
*/
if (sz - *pos >= endtoksz && 0 == strncmp
(&buf[*pos], endtoken, endtoksz)) {
advanceeoln(p, buf, sz, pos, 0);
break;
}
if (0 == p->ign)
texiwarn(p, "unexpected \"end\"");
advanceeoln(p, buf, sz, pos, 0);
continue;
} else if (TEXICMD__MAX != cmd)
if (NULL != texitoks[cmd].fp)
(*texitoks[cmd].fp)(p, cmd, buf, sz, pos);
}
}
static void
parsefile(struct texi *p, const char *fname)
{
struct texifile *f;
int fd;
struct stat st;
assert(p->filepos < 64);
f = &p->files[p->filepos];
memset(f, 0, sizeof(struct texifile));
f->name = fname;
if (-1 == (fd = open(fname, O_RDONLY, 0))) {
texiabort(p, fname);
} else if (-1 == fstat(fd, &st)) {
close(fd);
texiabort(p, fname);
}
f->mapsz = st.st_size;
f->map = mmap(NULL, f->mapsz,
PROT_READ, MAP_SHARED, fd, 0);
close(fd);
if (MAP_FAILED == f->map)
texiabort(p, fname);
p->filepos++;
parseeof(p, f->map, f->mapsz);
texifilepop(p);
}
static void
dodeftypevar(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
const char *blk;
blk = TEXICMD_DEFTYPEVR == cmd ?
"deftypevr" : "deftypevar";
if (p->ign) {
parseto(p, buf, sz, pos, blk);
return;
}
teximacro(p, "Pp");
if (TEXICMD_DEFTYPEVR == cmd) {
parsebracket(p, buf, sz, pos);
texiputchars(p, ":\n");
}
teximacroopen(p, "Vt");
parseeoln(p, buf, sz, pos);
teximacroclose(p);
teximacro(p, "Pp");
parseto(p, buf, sz, pos, blk);
}
static void
dodeftypefun(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
const char *blk;
blk = NULL;
switch (cmd) {
case (TEXICMD_DEFTYPEFN):
case (TEXICMD_DEFTYPEFUN):
blk = texitoks[cmd].tok;
break;
default:
break;
}
if (p->ign) {
if (NULL != blk)
parseto(p, buf, sz, pos, blk);
return;
}
switch (cmd) {
case (TEXICMD_DEFTYPEFN):
case (TEXICMD_DEFTYPEFUN):
teximacro(p, "Pp");
break;
default:
break;
}
if (TEXICMD_DEFTYPEFN == cmd ||
TEXICMD_DEFTYPEFNX == cmd) {
parsebracket(p, buf, sz, pos);
texiputchars(p, ":\n");
}
teximacroopen(p, "Ft");
parsesingle(p, buf, sz, pos);
teximacroclose(p);
teximacroopen(p, "Fn");
parsesingle(p, buf, sz, pos);
teximacroclose(p);
teximacroopen(p, "Li");
parseeoln(p, buf, sz, pos);
teximacroclose(p);
teximacro(p, "Pp");
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, const char *buf,
size_t sz, size_t *pos, const char *macro)
{
teximacroopen(p, macro);
p->seenws = 0;
parsebracket(p, buf, sz, pos);
if (*pos < sz - 1 &&
ismpunct(buf[*pos]) &&
isspace(buf[*pos + 1])) {
texiputchar(p, ' ');
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
teximacroclose(p);
}
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);
texiwarn(p, "trying: %s", path);
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);
return;
}
texierr(p, "couldn't find %s in includes", fname);
}
static void
doitalic(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
texiputchars(p, "\\fI");
parsebracket(p, buf, sz, pos);
texiputchars(p, "\\fP");
}
static void
doenv(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (p->literal)
parsebracket(p, buf, sz, pos);
else
doinline(p, buf, sz, pos, "Ev");
}
static void
doliteral(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (p->literal)
parsebracket(p, buf, sz, pos);
else
doinline(p, buf, sz, pos, "Li");
}
static void
doemph(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (p->literal)
doitalic(p, cmd, buf, sz, pos);
else
doinline(p, buf, sz, pos, "Em");
}
static void
docommand(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
doinline(p, buf, sz, pos, "Xr");
}
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
dofile(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (p->literal)
parsebracket(p, buf, sz, pos);
else
doinline(p, buf, sz, pos, "Pa");
}
static void
dodisplay(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
teximacro(p, "Bd -display -offset indent");
advanceeoln(p, buf, sz, pos, 1);
parseto(p, buf, sz, pos, "display");
teximacro(p, "Ed");
}
static void
doexample(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
const char *blk;
blk = TEXICMD_EXAMPLE == cmd ? "example" : "smallexample";
teximacro(p, "Bd -literal -offset indent");
advanceeoln(p, buf, sz, pos, 1);
p->literal++;
parseto(p, buf, sz, pos, blk);
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
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_TAB):
texiputchar(p, ' ');
break;
case (TEXICMD_AT):
texiputchar(p, '@');
break;
case (TEXICMD_BANG):
texiputchar(p, '!');
break;
case (TEXICMD_COPYRIGHT):
texiputchars(p, "\\(co");
break;
case (TEXICMD_DOTS):
texiputchars(p, "...");
break;
case (TEXICMD_LATEX):
texiputchars(p, "LaTeX");
break;
case (TEXICMD_QUESTIONMARK):
texiputchar(p, '?');
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");
}
/* FIXME */
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);
}
/* FIXME */
static void
doarg1(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (*pos == sz || '{' != buf[*pos])
return;
advance(p, buf, pos);
switch (cmd) {
case (TEXICMD_EMAIL):
teximacroopen(p, "Mt");
break;
case (TEXICMD_UREF):
case (TEXICMD_URL):
teximacroopen(p, "Lk");
break;
default:
break;
}
/* FIXME: this is ugly */
while (*pos < sz && '}' != buf[*pos] && ',' != buf[*pos]) {
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
while (*pos < sz && '}' != buf[*pos])
advance(p, buf, pos);
if (*pos < sz)
advance(p, buf, pos);
if (*pos < sz - 1 &&
ismpunct(buf[*pos]) &&
isspace(buf[*pos + 1])) {
texiputchar(p, ' ');
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
switch (cmd) {
case (TEXICMD_EMAIL):
case (TEXICMD_UREF):
case (TEXICMD_URL):
teximacroclose(p);
break;
default:
break;
}
}
static void
dosubsection(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
teximacro(p, "Pp");
teximacroopen(p, "Em");
parseeoln(p, buf, sz, pos);
teximacroclose(p);
teximacro(p, "Pp");
}
static void
dosection(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (p->outmacro)
texierr(p, "subsection in open line scope!?");
else if (p->literal)
texierr(p, "subsection in a literal scope!?");
teximacroopen(p, "Ss");
parseeoln(p, buf, sz, pos);
teximacroclose(p);
}
static void
dosp(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
teximacro(p, "Pp");
advanceeoln(p, buf, sz, pos, 1);
}
static void
dochapter(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (p->outmacro)
texierr(p, "section in open line scope!?");
else if (p->literal)
texierr(p, "section in a literal scope!?");
teximacroopen(p, "Sh");
parseeoln(p, buf, sz, pos);
teximacroclose(p);
}
static void
dotop(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
p->ign--;
advanceeoln(p, buf, sz, pos, 1);
teximacro(p, "Dd $Mdocdate: February 18 2015 $");
teximacro(p, "Dt SOMETHING 7");
teximacro(p, "Os");
teximacro(p, "Sh NAME");
teximacro(p, "Nm Something");
teximacro(p, "Nd Something");
}
static void
doitem(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
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:
teximacro(p, "Pp");
break;
}
parseeoln(p, buf, sz, pos);
if (TEXILIST_ITEM == p->list)
teximacroclose(p);
else
texiputchar(p, '\n');
}
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");
parseto(p, buf, sz, pos, "table");
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");
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_ITEM;
teximacro(p, "Bl -bullet");
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)
{
advanceeoln(p, buf, sz, pos, 1);
}
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;
progname = strrchr(argv[0], '/');
if (progname == NULL)
progname = argv[0];
else
++progname;
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);
memset(&texi, 0, sizeof(struct texi));
texi.ign = 1;
texi.dirs = parsedirs(dir, Idir, &texi.dirsz);
parsefile(&texi, argv[0]);
/* We shouldn't get here. */
texiexit(&texi);
return(EXIT_FAILURE);
usage:
fprintf(stderr, "usage: %s file\n", progname);
return(EXIT_FAILURE);
}