/* $Id: main.c,v 1.1 2015/02/16 22:24:43 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 <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.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_A4PAPER,
TEXICMD_ANCHOR,
TEXICMD_AT,
TEXICMD_BYE,
TEXICMD_CHAPTER,
TEXICMD_CINDEX,
TEXICMD_CODE,
TEXICMD_COMMAND,
TEXICMD_COMMENT,
TEXICMD_CONTENTS,
TEXICMD_COPYING,
TEXICMD_COPYRIGHT,
TEXICMD_DETAILMENU,
TEXICMD_DIRCATEGORY,
TEXICMD_DIRENTRY,
TEXICMD_EMAIL,
TEXICMD_EMPH,
TEXICMD_END,
TEXICMD_EXAMPLE,
TEXICMD_FILE,
TEXICMD_I,
TEXICMD_IFHTML,
TEXICMD_IFNOTTEX,
TEXICMD_IFTEX,
TEXICMD_IMAGE,
TEXICMD_ITEM,
TEXICMD_ITEMIZE,
TEXICMD_KBD,
TEXICMD_LATEX,
TEXICMD_MENU,
TEXICMD_NODE,
TEXICMD_QUOTATION,
TEXICMD_PARINDENT,
TEXICMD_REF,
TEXICMD_SAMP,
TEXICMD_SECTION,
TEXICMD_SETCHAPNEWPAGE,
TEXICMD_SETFILENAME,
TEXICMD_SETTITLE,
TEXICMD_SUBSECTION,
TEXICMD_TABLE,
TEXICMD_TEX,
TEXICMD_TEXSYM,
TEXICMD_TITLEFONT,
TEXICMD_TITLEPAGE,
TEXICMD_TOP,
TEXICMD_UNNUMBERED,
TEXICMD_URL,
TEXICMD_VAR,
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;
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) */
};
/*
* The main parse structure.
* This keeps any necessary information handy.
*/
struct texi {
struct texifile files[64];
size_t filepos;
unsigned flags;
#define TEXI_IGN 0x01 /* don't print anything */
#define TEXI_HEADER (TEXI_IGN | 0x02) /* haven't seen @top yet */
#define TEXI_LITERAL 0x04 /* output all whitespace */
size_t outcol; /* column of output */
int outmacro; /* whether output is in line macro */
int seenws; /* whitespace has been ignored */
};
#define ismpunct(_x) \
('.' == (_x) || \
',' == (_x) || \
';' == (_x))
static void doarg1(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 docommand(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 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 doifnottex(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 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 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 dosh(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] = {
{ doignline, "afourpaper", 10 }, /* TEXICMD_A4PAPER */
{ doignbracket, "anchor", 6 }, /* TEXICMD_ANCHOR */
{ dosymbol, "@", 1 }, /* TEXICMD_AT */
{ dobye, "bye", 3 }, /* TEXICMD_BYE */
{ dosh, "chapter", 7 }, /* TEXICMD_CHAPTER */
{ doignline, "cindex", 6 }, /* TEXICMD_CINDEX */
{ doliteral, "code", 4 }, /* TEXICMD_CODE */
{ docommand, "command", 7 }, /* TEXICMD_COMMAND */
{ doignline, "c", 1 }, /* TEXICMD_COMMENT */
{ doignline, "contents", 8 }, /* TEXICMD_CONTENTS */
{ doignblock, "copying", 7 }, /* TEXICMD_COPYING */
{ dosymbol, "copyright", 9 }, /* TEXICMD_COPYRIGHT */
{ doignblock, "detailmenu", 10 }, /* TEXICMD_DETAILMENU */
{ doignline, "dircategory", 11 }, /* TEXICMD_DIRCATEGORY */
{ doignblock, "direntry", 8 }, /* TEXICMD_DIRENTRY */
{ doarg1, "email", 5 }, /* TEXICMD_EMAIL */
{ doemph, "emph", 4 }, /* TEXICMD_EMPH */
{ NULL, "end", 3 }, /* TEXICMD_END */
{ doexample, "example", 7 }, /* TEXICMD_EXAMPLE */
{ dofile, "file", 4 }, /* TEXICMD_FILE */
{ doitalic, "i", 1 }, /* TEXICMD_I */
{ doignblock, "ifhtml", 6 }, /* TEXICMD_IFHTML */
{ doifnottex, "ifnottex", 8 }, /* TEXICMD_IFNOTTEX */
{ doignblock, "iftex", 5 }, /* TEXICMD_IFTEX */
{ doignbracket, "image", 5 }, /* TEXICMD_IMAGE */
{ doitem, "item", 4 }, /* TEXICMD_ITEM */
{ doitemize, "itemize", 7 }, /* TEXICMD_ITEMIZE */
{ doliteral, "kbd", 3 }, /* TEXICMD_KBD */
{ dosymbol, "LaTeX", 5 }, /* TEXICMD_LATEX */
{ doignblock, "menu", 4 }, /* TEXICMD_MENU */
{ doignline, "node", 4 }, /* TEXICMD_NODE */
{ doquotation, "quotation", 9 }, /* TEXICMD_QUOTATION */
{ doignline, "paragraphindent", 14 }, /* TEXICMD_PARINDENT */
{ dobracket, "ref", 3 }, /* TEXICMD_REF */
{ doliteral, "samp", 4 }, /* TEXICMD_SAMP */
{ dosection, "section", 7 }, /* TEXICMD_SECTION */
{ doignline, "setchapternewpage", 17 }, /* TEXICMD_SETCHAPNEWPAGE */
{ doignline, "setfilename", 11 }, /* TEXICMD_SETFILENAME */
{ doignline, "settitle", 8 }, /* TEXICMD_SETTITLE */
{ dosubsection, "subsection", 10 }, /* TEXICMD_SUBSECTION */
{ dotable, "table", 5 }, /* TEXICMD_TABLE */
{ doignblock, "tex", 3 }, /* TEXICMD_TEX */
{ dosymbol, "TeX", 3 }, /* TEXICMD_TEXSYM */
{ dobracket, "titlefont", 9 }, /* TEXICMD_TITLEFONT */
{ doignblock, "titlepage", 9 }, /* TEXICMD_TITLEPAGE */
{ dotop, "top", 3 }, /* TEXICMD_TOP */
{ dosh, "unnumbered", 10 }, /* TEXICMD_UNNUMBERED */
{ doarg1, "url", 3 }, /* TEXICMD_URL */
{ doliteral, "var", 3 }, /* TEXICMD_VAR */
};
static void
texifilepop(struct texi *p)
{
struct texifile *f;
assert(p->filepos > 0);
f = &p->files[--p->filepos];
munmap(f->map, f->mapsz);
}
static void
texiexit(struct texi *p)
{
while (p->filepos > 0)
texifilepop(p);
}
static void
texifatal(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: ",
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);
}
/*
* 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 (TEXI_IGN & p->flags)
return;
putchar(c);
if ('\n' == c) {
p->outcol = 0;
p->outmacro = 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
texifputs(struct texi *p, const char *s)
{
int rc;
if (TEXI_IGN & p->flags)
return;
if (p->outcol)
texiputchar(p, '\n');
if (EOF != (rc = fputs(s, stdout)))
p->outcol += rc;
}
/*
* 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 (TEXI_IGN & p->flags)
return;
if (p->outcol)
texiputchar(p, '\n');
puts(s);
p->outcol = 0;
p->seenws = 0;
}
/*
* 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 (TEXI_LITERAL & p->flags) {
while (*pos < sz && isspace(buf[*pos])) {
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)
{
while (*pos < sz && '\n' != buf[*pos])
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 (p->outcol > 72 && ! (TEXI_LITERAL & p->flags))
texiputchar(p, '\n');
if (p->seenws && p->outcol && ! (TEXI_LITERAL & p->flags))
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]);
for (*end = ++pos; *end < sz && ! isspace(buf[*end]); (*end)++)
if ('@' == 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 ('}'):
texiwarn(p, "unexpected \"}\"");
advance(p, buf, &pos);
continue;
case ('{'):
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;
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 ('{'):
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
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 ('}'):
texiwarn(p, "unexpected \"}\"");
advance(p, buf, pos);
continue;
case ('{'):
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 && ' ' == 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);
break;
}
texiwarn(p, "unexpected \"end\"");
advanceeoln(p, buf, sz, pos);
continue;
} else if (TEXICMD__MAX != cmd)
if (NULL != texitoks[cmd].fp)
(*texitoks[cmd].fp)(p, cmd, buf, sz, pos);
}
}
static void
doignblock(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
unsigned int sv = p->flags;
const char *blockname;
p->flags |= TEXI_IGN;
switch (cmd) {
case (TEXICMD_COPYING):
blockname = "copying";
break;
case (TEXICMD_DETAILMENU):
blockname = "detailmenu";
break;
case (TEXICMD_DIRENTRY):
blockname = "direntry";
break;
case (TEXICMD_IFHTML):
blockname = "ifhtml";
break;
case (TEXICMD_IFTEX):
blockname = "iftex";
break;
case (TEXICMD_MENU):
blockname = "menu";
break;
case (TEXICMD_TEX):
blockname = "tex";
break;
case (TEXICMD_TITLEPAGE):
blockname = "titlepage";
break;
default:
abort();
}
parseto(p, buf, sz, pos, blockname);
p->flags = sv;
}
static void
doifnottex(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
parseto(p, buf, sz, pos, "ifnottex");
}
static void
doinline(struct texi *p, const char *buf,
size_t sz, size_t *pos, const char *macro)
{
if ( ! p->outmacro)
texifputs(p, ".");
texiputchars(p, macro);
texiputchar(p, ' ');
p->seenws = 0;
p->outmacro++;
parsebracket(p, buf, sz, pos);
p->outmacro--;
if (*pos < sz - 1 &&
ismpunct(buf[*pos]) &&
isspace(buf[*pos + 1])) {
texiputchar(p, ' ');
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
if ( ! p->outmacro)
texiputchar(p, '\n');
}
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
doliteral(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (TEXI_LITERAL & p->flags)
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 (TEXI_LITERAL & p->flags)
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 (TEXI_LITERAL & p->flags)
parsebracket(p, buf, sz, pos);
else
doinline(p, buf, sz, pos, "Pa");
}
static void
doexample(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
unsigned int sv;
teximacro(p, ".Bd -literal");
advanceeoln(p, buf, sz, pos);
if ('\n' == buf[*pos])
advance(p, buf, pos);
sv = p->flags;
p->flags |= TEXI_LITERAL;
parseto(p, buf, sz, pos, "example");
p->flags = sv;
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)
{
switch (cmd) {
case (TEXICMD_AT):
texiputchars(p, "@");
break;
case (TEXICMD_COPYRIGHT):
texiputchars(p, "\\(co");
break;
case (TEXICMD_LATEX):
texiputchars(p, "LaTeX");
break;
case (TEXICMD_TEXSYM):
texiputchars(p, "TeX");
break;
default:
abort();
}
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
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);
if ( ! p->outmacro)
texifputs(p, ".");
switch (cmd) {
case (TEXICMD_EMAIL):
texiputchars(p, "Lk ");
break;
case (TEXICMD_URL):
texiputchars(p, "Mt ");
break;
default:
abort();
}
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);
}
if ( ! p->outmacro)
texiputchar(p, '\n');
}
static void
dosubsection(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (TEXI_IGN & p->flags) {
advanceeoln(p, buf, sz, pos);
return;
}
while (*pos < sz && ' ' == buf[*pos])
advance(p, buf, pos);
texifputs(p, ".Pp");
while (*pos < sz && '\n' != buf[*pos]) {
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
texifputs(p, ".Pp");
}
static void
dosection(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (TEXI_IGN & p->flags) {
advanceeoln(p, buf, sz, pos);
return;
}
while (*pos < sz && ' ' == buf[*pos])
advance(p, buf, pos);
texifputs(p, ".Ss ");
while (*pos < sz && '\n' != buf[*pos]) {
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
texiputchar(p, '\n');
}
static void
dosh(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
if (TEXI_IGN & p->flags) {
advanceeoln(p, buf, sz, pos);
return;
}
while (*pos < sz && ' ' == buf[*pos])
advance(p, buf, pos);
texifputs(p, ".Sh ");
while (*pos < sz && '\n' != buf[*pos]) {
texiputchar(p, toupper(buf[*pos]));
advance(p, buf, pos);
}
texiputchar(p, '\n');
}
static void
dotop(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
p->flags &= ~TEXI_HEADER;
advanceeoln(p, buf, sz, pos);
teximacro(p, ".Dd $Mdocdate: February 16 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)
{
size_t end;
/* See if we have arguments... */
for (end = *pos; end < sz; end++)
if (' ' != buf[end] && '\t' != buf[end])
break;
/* If we have arguments, print them too. */
if ('\n' != buf[end]) {
texifputs(p, ".It");
/* FIXME: process commands. */
while (*pos < sz && '\n' != buf[*pos]) {
texiputchar(p, buf[*pos]);
advance(p, buf, pos);
}
texiputchar(p, '\n');
} else
teximacro(p, ".It");
}
static void
dotable(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
teximacro(p, ".Bl -tag -width Ds");
parseto(p, buf, sz, pos, "table");
teximacro(p, ".El");
}
static void
doitemize(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
teximacro(p, ".Bl -bullet");
parseto(p, buf, sz, pos, "itemize");
teximacro(p, ".El");
}
static void
doignbracket(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
unsigned int sv = p->flags;
p->flags |= TEXI_IGN;
parsebracket(p, buf, sz, pos);
p->flags = sv;
}
static void
doignline(struct texi *p, enum texicmd cmd,
const char *buf, size_t sz, size_t *pos)
{
advanceeoln(p, buf, sz, pos);
if (*pos < sz)
advance(p, buf, pos);
}
static int
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))) {
texifatal(p, fname);
} else if (-1 == fstat(fd, &st)) {
close(fd);
texifatal(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) {
texifatal(p, fname);
return(0);
}
p->filepos++;
parseeof(p, f->map, f->mapsz);
texifilepop(p);
return(1);
}
int
main(int argc, char *argv[])
{
struct texi texi;
int c, rc;
const char *progname;
progname = strrchr(argv[0], '/');
if (progname == NULL)
progname = argv[0];
else
++progname;
while (-1 != (c = getopt(argc, argv, "")))
switch (c) {
default:
goto usage;
}
argv += optind;
if (0 == (argc -= optind))
goto usage;
memset(&texi, 0, sizeof(struct texi));
texi.flags = TEXI_HEADER;
rc = parsefile(&texi, argv[0]);
return(rc ? EXIT_SUCCESS : EXIT_FAILURE);
usage:
fprintf(stderr, "usage: %s file\n", progname);
return(EXIT_FAILURE);
}