/* $Id: main.c,v 1.16 2015/02/19 10:20:31 kristaps Exp $ */ /* * Copyright (c) 2015 Kristaps Dzonsons * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include /* * 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_ACUTE, TEXICMD_A4PAPER, TEXICMD_ANCHOR, TEXICMD_APPENDIX, TEXICMD_APPENDIXSEC, TEXICMD_ASTERISK, TEXICMD_AT, TEXICMD_AUTHOR, TEXICMD_B, TEXICMD_BANG, TEXICMD_BULLET, TEXICMD_BYE, TEXICMD_CENTER, TEXICMD_CHAPTER, TEXICMD_CINDEX, TEXICMD_CIRCUMFLEX, TEXICMD_CITE, TEXICMD_CODE, TEXICMD_COLON, TEXICMD_COMMAND, TEXICMD_COMMENT, TEXICMD_COMMENT_LONG, TEXICMD_CONTENTS, TEXICMD_COPYING, TEXICMD_COPYRIGHT, TEXICMD_DEFFN, TEXICMD_DEFFNX, TEXICMD_DEFMAC, TEXICMD_DEFMACX, TEXICMD_DEFTP, TEXICMD_DEFTPX, TEXICMD_DEFTYPEFN, TEXICMD_DEFTYPEFNX, TEXICMD_DEFTYPEFUN, TEXICMD_DEFTYPEFUNX, TEXICMD_DEFTYPEVAR, TEXICMD_DEFTYPEVARX, TEXICMD_DEFTYPEVR, TEXICMD_DEFTYPEVRX, TEXICMD_DEFUN, TEXICMD_DEFUNX, TEXICMD_DEFVAR, TEXICMD_DEFVARX, TEXICMD_DEFVR, TEXICMD_DEFVRX, TEXICMD_DETAILMENU, TEXICMD_DFN, TEXICMD_DIRCATEGORY, TEXICMD_DIRENTRY, TEXICMD_DISPLAY, TEXICMD_DOTS, TEXICMD_EMAIL, TEXICMD_EMPH, TEXICMD_END, TEXICMD_ENUMERATE, TEXICMD_ENV, TEXICMD_ERROR, TEXICMD_EXAMPLE, TEXICMD_FILE, TEXICMD_GRAVE, TEXICMD_GROUP, TEXICMD_HEADING, TEXICMD_HEADINGS, TEXICMD_HYPHEN, TEXICMD_I, TEXICMD_IFCLEAR, TEXICMD_IFDOCBOOK, TEXICMD_IFHTML, TEXICMD_IFINFO, TEXICMD_IFNOTDOCBOOK, TEXICMD_IFNOTHTML, TEXICMD_IFNOTINFO, TEXICMD_IFNOTPLAINTEXT, TEXICMD_IFNOTTEX, TEXICMD_IFNOTXML, TEXICMD_IFPLAINTEXT, TEXICMD_IFTEX, TEXICMD_IFSET, TEXICMD_IFXML, TEXICMD_IMAGE, TEXICMD_INCLUDE, TEXICMD_INDENTBLOCK, TEXICMD_INSERTCOPYING, TEXICMD_ITEM, TEXICMD_ITEMIZE, TEXICMD_KBD, TEXICMD_LATEX, TEXICMD_MATH, TEXICMD_MENU, TEXICMD_NEED, TEXICMD_NEWLINE, TEXICMD_NODE, TEXICMD_NOINDENT, TEXICMD_OPTION, TEXICMD_PXREF, TEXICMD_QUESTIONMARK, TEXICMD_QUOTATION, TEXICMD_PAGE, TEXICMD_PARINDENT, TEXICMD_PRINTINDEX, TEXICMD_R, TEXICMD_REF, TEXICMD_RESULT, TEXICMD_SAMP, TEXICMD_SANSSERIF, TEXICMD_SC, TEXICMD_SECTION, TEXICMD_SET, TEXICMD_SETCHAPNEWPAGE, TEXICMD_SETFILENAME, TEXICMD_SETTITLE, TEXICMD_SLANTED, TEXICMD_SP, TEXICMD_SPACE, TEXICMD_SMALLDISPLAY, TEXICMD_SMALLEXAMPLE, TEXICMD_SMALLINDENTBLOCK, TEXICMD_SQUIGGLE_LEFT, TEXICMD_SQUIGGLE_RIGHT, TEXICMD_STRONG, TEXICMD_SUBSECTION, TEXICMD_SUBTITLE, TEXICMD_T, TEXICMD_TAB, TEXICMD_TABLE, TEXICMD_TEX, TEXICMD_TEXSYM, TEXICMD_TILDE, TEXICMD_TITLE, TEXICMD_TITLEFONT, TEXICMD_TITLEPAGE, TEXICMD_TOP, TEXICMD_UMLAUT, TEXICMD_UNNUMBERED, TEXICMD_UNNUMBEREDSEC, TEXICMD_UREF, TEXICMD_URL, TEXICMD_VAR, TEXICMD_VERBATIMINCLUDE, TEXICMD_VSKIP, TEXICMD_W, TEXICMD_XREF, 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 */ char *title; /* title of document */ char *subtitle; /* subtitle of document */ /* * The following control what we output to the screen. * The complexity is required to accomodate for mdoc(7). */ enum texilist list; /* current list (set recursively) */ int outmacro; /* if >0, output is in line macro */ int seenws; /* ws has been seen (and ignored) */ int seenvs; /* newline has been Pp'd */ int ign; /* if >0, don't print anything */ int literal; /* if >0, literal context */ }; /* Texi disregards spaces and tabs. */ #define isws(_x) \ (' ' == (_x) || '\t' == (_x)) #define ismspace(_x) \ (isws((_x)) || '\n' == (_x)) 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 dofont(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 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 void dotitle(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] = { { 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 */ { dosymbol, "*", 1 }, /* TEXICMD_ASTERISK */ { dosymbol, "@", 1 }, /* TEXICMD_AT */ { doignline, "author", 6 }, /* TEXICMD_AUTHOR */ { dofont, "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 */ { dofont, "code", 4 }, /* TEXICMD_CODE */ { dofont, "cite", 4 }, /* TEXICMD_CITE */ { dosymbol, ":", 1 }, /* TEXICMD_COLON */ { 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 */ { dofont, "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 */ { dofont, "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 */ { doinline, "file", 4 }, /* TEXICMD_FILE */ { doaccent, "`", 1 }, /* TEXICMD_GRAVE */ { doblock, "group", 5 }, /* TEXICMD_GROUP */ { dosection, "heading", 7 }, /* TEXICMD_HEADING */ { doignline, "headings", 8 }, /* TEXICMD_HEADINGS */ { dosymbol, "-", 1 }, /* TEXICMD_HYPHEN */ { dofont, "i", 1 }, /* TEXICMD_I */ { doignblock, "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 */ { 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 */ { dofont, "kbd", 3 }, /* TEXICMD_KBD */ { dosymbol, "LaTeX", 5 }, /* TEXICMD_LATEX */ { domath, "math", 4 }, /* TEXICMD_MATH */ { doignblock, "menu", 4 }, /* TEXICMD_MENU */ { 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 */ { dofont, "r", 1 }, /* TEXICMD_R */ { dobracket, "ref", 3 }, /* TEXICMD_REF */ { dosymbol, "result", 6 }, /* TEXICMD_RESULT */ { dofont, "samp", 4 }, /* TEXICMD_SAMP */ { dofont, "sansserif", 9 }, /* TEXICMD_SANSSERIF */ { dobracket, "sc", 2 }, /* TEXICMD_SC */ { dosection, "section", 7 }, /* TEXICMD_SECTION */ { doignline, "set", 3 }, /* TEXICMD_SET */ { doignline, "setchapternewpage", 17 }, /* TEXICMD_SETCHAPNEWPAGE */ { doignline, "setfilename", 11 }, /* TEXICMD_SETFILENAME */ { dotitle, "settitle", 8 }, /* TEXICMD_SETTITLE */ { dofont, "slanted", 7 }, /* TEXICMD_SLANTED */ { dosp, "sp", 2 }, /* TEXICMD_SP */ { dosymbol, " ", 1 }, /* TEXICMD_SPACE */ { dodisplay, "smalldisplay", 12 }, /* TEXICMD_SMALLDISPLAY */ { doexample, "smallexample", 12 }, /* TEXICMD_SMALLEXAMPLE */ { dodisplay, "smallindentblock", 16 }, /* TEXICMD_SMALLINDENTBLOCK */ { dosymbol, "{", 1 }, /* TEXICMD_SQUIGGLE_LEFT */ { dosymbol, "}", 1 }, /* TEXICMD_SQUIGGLE_RIGHT */ { dofont, "strong", 6 }, /* TEXICMD_STRONG */ { dosubsection, "subsection", 10 }, /* TEXICMD_SUBSECTION */ { doignline, "subtitle", 8 }, /* TEXICMD_SUBTITLE */ { dofont, "t", 1 }, /* TEXICMD_T */ { dosymbol, "\t", 1 }, /* TEXICMD_TAB */ { 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 */ { dolink, "uref", 4 }, /* TEXICMD_UREF */ { dolink, "url", 3 }, /* TEXICMD_URL */ { doinline, "var", 3 }, /* TEXICMD_VAR */ { doverbinclude, "verbatiminclude", 15 }, /* TEXICMD_VERBATIMINCLUDE */ { dosp, "vskip", 5 }, /* TEXICMD_VSKIP */ { dobracket, "w", 1 }, /* TEXICMD_W */ { dolink, "xref", 4 }, /* TEXICMD_XREF */ }; /* * 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 and free all resources * that we've allocated during the parse. * 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); free(p->subtitle); free(p->title); } /* * 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); } /* * Print an error message (to stderr) tied to our current location in * the parse sequence, invoke texiexit(), then die. */ 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 to the output if we're not ignoring. * Adjusts our output status. */ static void texiputchar(struct texi *p, char c) { if (p->ign) return; putchar(c); p->seenvs = 0; 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++); } /* * Close an mdoc(7) macro opened with teximacroopen(). * If there are no more macros on the line, prints a newline. */ static void teximacroclose(struct texi *p) { /* FIXME: punctuation. */ if (0 == --p->outmacro) texiputchar(p, '\n'); } /* * Open a mdoc(7) macro. * This is used for line macros, e.g., Qq [foo bar baz]. * It can be invoked for nested macros, e.g., Qq Li foo . */ 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 a stadnalone mdoc(7) command with the trailing newline. */ 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'); } static void texivspace(struct texi *p) { if (p->seenvs) return; teximacro(p, "Pp"); p->seenvs = 1; } /* * 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)++; } static void texipunctuate(struct texi *p, const char *buf, size_t sz, size_t *pos) { size_t start, end; if (1 != p->outmacro) return; for (start = end = *pos; end < sz; end++) { switch (buf[end]) { case (','): case (')'): case ('.'): case ('"'): case (':'): case ('!'): case ('?'): continue; default: break; } break; } if (end == *pos) return; if (end + 1 == sz || ' ' == buf[end] || '\n' == buf[end]) { for ( ; start < end; start++) { texiputchar(p, ' '); texiputchar(p, buf[start]); advance(p, buf, 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 && ismspace(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 && ismspace(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]) texivspace(p); 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) { /* FIXME: disregards @NEWLINE. */ 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, char extra) { if (0 == p->outmacro && p->outcol > 72 && 0 == p->literal) texiputchar(p, '\n'); /* FIXME: abstract this: we use it elsewhere. */ if (p->seenws && p->outcol && 0 == p->literal) texiputchar(p, ' '); p->seenws = 0; while (*pos < sz && ! ismspace(buf[*pos])) { switch (buf[*pos]) { case ('@'): case ('}'): case ('{'): return; } if ('\0' != extra && buf[*pos] == extra) 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); } } /* * Look up the command at position "pos" in the buffer, returning it (or * TEXICMD__MAX if none found) and setting "end" to be the absolute * index after the command name. */ 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 ((*end = pos) == sz) return(TEXICMD__MAX); else if ((*end = ++pos) == sz) return(TEXICMD__MAX); /* Alphabetic commands are special. */ if ( ! isalpha(buf[pos])) { if ((*end = pos + 1) == sz) return(TEXICMD__MAX); 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 && ! ismspace(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); } /* * Parse an argument from a bracketed command, e.g., @url{foo, baz}. * Num should be set to the argument we're currently parsing, although * it suffixes for it to be zero or non-zero. * This will return 1 if there are more arguments, 0 otherwise. * This will stop (returning 0) in the event of EOF or if we're not at a * bracket for the zeroth parse. */ static int parsearg(struct texi *p, const char *buf, size_t sz, size_t *pos, size_t num) { size_t end; enum texicmd cmd; while (*pos < sz && ismspace(buf[*pos])) advance(p, buf, pos); if (*pos == sz || (0 == num && '{' != buf[*pos])) return(0); if (0 == num) advance(p, buf, pos); while ((*pos = advancenext(p, buf, sz, pos)) < sz) { switch (buf[*pos]) { case (','): advance(p, buf, pos); return(1); case ('}'): advance(p, buf, pos); return(0); 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); } return(0); } /* * Parse until the end of a bracketed statement, e.g., @foo{bar baz}. * This will stop in the event of EOF or if we're not at a bracket. */ static void parsebracket(struct texi *p, const char *buf, size_t sz, size_t *pos) { size_t end; enum texicmd cmd; while (*pos < sz && ismspace(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, '\0'); 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, '\0'); 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); } } /* * Parse a single word or command. * This will return immediately at the EOF. */ 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, '\0'); 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 int parselinearg(struct texi *p, const char *buf, size_t sz, size_t *pos) { while (*pos < sz && isws(buf[*pos])) { p->seenws = 1; advance(p, buf, pos); } if (*pos < sz && '{' == buf[*pos]) parsebracket(p, buf, sz, pos); else if ('\n' != buf[*pos]) parsesingle(p, buf, sz, pos); else return(0); return(1); } /* * Parse til the end of the buffer. */ static void parseeof(struct texi *p, const char *buf, size_t sz) { size_t pos; for (pos = 0; pos < sz; ) parsesingle(p, buf, sz, &pos); } /* * Parse a block sequence until we have the "@end endtoken" command * invocation. * This will return immediately at EOF. */ 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, '\0'); 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: 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); } } /* * Memory-map the file "fname" and begin parsing it. * This can be called in a nested context. */ static void parsefile(struct texi *p, const char *fname, int parse) { struct texifile *f; int fd; struct stat st; size_t i; 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++; if ( ! parse) { /* * We're printing verbatim output. * Make sure it doesn't get interpreted as mdoc by * escaping escapes and making sure leading dots don't * trigger mdoc(7) expansion. */ for (i = 0; i < f->mapsz; i++) { if (i > 0 && '.' == f->map[i]) if ('\n' == f->map[i - 1]) fputs("\\&", stdout); putchar(f->map[i]); if ('\\' == f->map[i]) putchar('e'); } } else parseeof(p, f->map, f->mapsz); texifilepop(p); } 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; switch (cmd) { 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: abort(); } if (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 dofont(struct texi *p, enum texicmd cmd, const char *buf, size_t sz, size_t *pos) { const char *font; switch (cmd) { case (TEXICMD_B): case (TEXICMD_STRONG): font = "\\fB"; break; case (TEXICMD_CITE): case (TEXICMD_DFN): case (TEXICMD_EMPH): case (TEXICMD_I): case (TEXICMD_SLANTED): font = "\\fI"; break; case (TEXICMD_CODE): case (TEXICMD_KBD): case (TEXICMD_R): case (TEXICMD_SAMP): case (TEXICMD_SANSSERIF): case (TEXICMD_T): font = "\\fR"; break; default: abort(); } texiputchars(p, font); parsebracket(p, buf, sz, pos); texiputchars(p, "\\fP"); } 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) { teximacro(p, "Bd -filled -offset indent"); 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_TAB): 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_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 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--; } static void dosubsection(struct texi *p, enum texicmd cmd, const char *buf, size_t sz, size_t *pos) { if (p->outmacro) texierr(p, "\"Em\" in open line scope!?"); else if (p->literal) texierr(p, "\"Em\" in a literal scope!?"); texivspace(p); teximacroopen(p, "Em"); parseeoln(p, buf, sz, pos); teximacroclose(p); texivspace(p); } static void dosection(struct texi *p, enum texicmd cmd, const char *buf, size_t sz, size_t *pos) { const char *blk; switch (cmd) { case (TEXICMD_APPENDIX): case (TEXICMD_CHAPTER): case (TEXICMD_TOP): case (TEXICMD_UNNUMBERED): blk = "Sh"; break; case (TEXICMD_APPENDIXSEC): case (TEXICMD_HEADING): case (TEXICMD_SECTION): case (TEXICMD_UNNUMBEREDSEC): blk = "Ss"; break; default: abort(); } if (p->outmacro) texierr(p, "%s in open line scope!?", blk); else if (p->literal) texierr(p, "%s in a literal scope!?", blk); teximacroopen(p, blk); 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]; 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) { 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; } 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 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, "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"); 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_ITEM; 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); }