=================================================================== RCS file: /cvs/mandoc/mdoc.c,v retrieving revision 1.51 retrieving revision 1.96 diff -u -p -r1.51 -r1.96 --- mandoc/mdoc.c 2009/03/05 13:12:12 1.51 +++ mandoc/mdoc.c 2009/07/27 19:43:02 1.96 @@ -1,51 +1,87 @@ -/* $Id: mdoc.c,v 1.51 2009/03/05 13:12:12 kristaps Exp $ */ +/* $Id: mdoc.c,v 1.96 2009/07/27 19:43:02 kristaps Exp $ */ /* - * Copyright (c) 2008 Kristaps Dzonsons + * Copyright (c) 2008, 2009 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. + * 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. + * 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 "private.h" +#include "libmdoc.h" -/* - * Main caller in the libmdoc library. This begins the parsing routine, - * handles allocation of data, and so forth. Most of the "work" is done - * in macro.c and validate.c. - */ +const char *const __mdoc_merrnames[MERRMAX] = { + "trailing whitespace", /* ETAILWS */ + "unexpected quoted parameter", /* EQUOTPARM */ + "unterminated quoted parameter", /* EQUOTTERM */ + "system: malloc error", /* EMALLOC */ + "argument parameter suggested", /* EARGVAL */ + "macro not callable", /* ENOCALL */ + "macro disallowed in prologue", /* EBODYPROL */ + "macro disallowed in body", /* EPROLBODY */ + "text disallowed in prologue", /* ETEXTPROL */ + "blank line disallowed", /* ENOBLANK */ + "text parameter too long", /* ETOOLONG */ + "invalid escape sequence", /* EESCAPE */ + "invalid character", /* EPRINT */ + "document has no body", /* ENODAT */ + "document has no prologue", /* ENOPROLOGUE */ + "expected line arguments", /* ELINE */ + "invalid AT&T argument", /* EATT */ + "default name not yet set", /* ENAME */ + "missing list type", /* ELISTTYPE */ + "missing display type", /* EDISPTYPE */ + "too many display types", /* EMULTIDISP */ + "too many list types", /* EMULTILIST */ + "NAME section must be first", /* ESECNAME */ + "badly-formed NAME section", /* ENAMESECINC */ + "argument repeated", /* EARGREP */ + "expected boolean parameter", /* EBOOL */ + "inconsistent column syntax", /* ECOLMIS */ + "nested display invalid", /* ENESTDISP */ + "width argument missing", /* EMISSWIDTH */ + "invalid section for this manual section", /* EWRONGMSEC */ + "section out of conventional order", /* ESECOOO */ + "section repeated", /* ESECREP */ + "invalid standard argument", /* EBADSTAND */ + "multi-line arguments discouraged", /* ENOMULTILINE */ + "multi-line arguments suggested", /* EMULTILINE */ + "line arguments discouraged", /* ENOLINE */ + "prologue macro out of conventional order", /* EPROLOOO */ + "prologue macro repeated", /* EPROLREP */ + "invalid manual section", /* EBADMSEC */ + "invalid section", /* EBADSEC */ + "invalid font mode", /* EFONT */ + "invalid date syntax", /* EBADDATE */ + "invalid number format", /* ENUMFMT */ + "superfluous width argument", /* ENOWIDTH */ + "system: utsname error", /* EUTSNAME */ + "obsolete macro", /* EOBS */ + "macro-like parameter", /* EMACPARM */ + "end-of-line scope violation", /* EIMPBRK */ + "empty macro ignored", /* EIGNE */ + "unclosed explicit scope", /* EOPEN */ + "unterminated quoted phrase", /* EQUOTPHR */ + "closure macro without prior context", /* ENOCTX */ + "invalid whitespace after control character", /* ESPACE */ + "no description found for library" /* ELIB */ +}; -static struct mdoc_arg *argdup(size_t, const struct mdoc_arg *); -static void argfree(size_t, struct mdoc_arg *); -static void argcpy(struct mdoc_arg *, - const struct mdoc_arg *); - -static struct mdoc_node *mdoc_node_alloc(const struct mdoc *); -static int mdoc_node_append(struct mdoc *, - struct mdoc_node *); -static void mdoc_elem_free(struct mdoc_elem *); -static void mdoc_text_free(struct mdoc_text *); - - const char *const __mdoc_macronames[MDOC_MAX] = { - "\\\"", "Dd", "Dt", "Os", + "Ap", "Dd", "Dt", "Os", "Sh", "Ss", "Pp", "D1", "Dl", "Bd", "Ed", "Bl", "El", "It", "Ad", "An", @@ -74,7 +110,12 @@ const char *const __mdoc_macronames[MDOC_MAX] = { "Tn", "Ux", "Xc", "Xo", "Fo", "Fc", "Oo", "Oc", "Bk", "Ek", "Bt", "Hf", - "Fr", "Ud", + "Fr", "Ud", "Lb", "Lp", + "Lk", "Mt", "Brq", "Bro", + /* LINTED */ + "Brc", "\%C", "Es", "En", + /* LINTED */ + "Dx", "\%Q", "br", "sp" }; const char *const __mdoc_argnames[MDOC_ARG_MAX] = { @@ -85,188 +126,176 @@ const char *const __mdoc_argnames[MDOC_ARG_MAX] = { "tag", "diag", "hang", "ohang", "inset", "column", "width", "compact", "std", - "p1003.1-88", "p1003.1-90", "p1003.1-96", - "p1003.1-2001", "p1003.1-2004", "p1003.1", - "p1003.1b", "p1003.1b-93", "p1003.1c-95", - "p1003.1g-2000", "p1003.2-92", "p1387.2-95", - "p1003.2", "p1387.2", "isoC-90", - "isoC-amd1", "isoC-tcor1", "isoC-tcor2", - "isoC-99", "ansiC", "ansiC-89", - "ansiC-99", "ieee754", "iso8802-3", - "xpg3", "xpg4", "xpg4.2", - "xpg4.3", "xbd5", "xcu5", - "xsh5", "xns5", "xns5.2d2.0", - "xcurses4.2", "susv2", "susv3", - "svid4", "filled", "words", - "emphasis", "symbolic", + "filled", "words", "emphasis", + "symbolic", "nested" }; const char * const *mdoc_macronames = __mdoc_macronames; const char * const *mdoc_argnames = __mdoc_argnames; +static void mdoc_free1(struct mdoc *); +static int mdoc_alloc1(struct mdoc *); +static struct mdoc_node *node_alloc(struct mdoc *, int, int, + int, enum mdoc_type); +static int node_append(struct mdoc *, + struct mdoc_node *); +static int parsetext(struct mdoc *, int, char *); +static int parsemacro(struct mdoc *, int, char *); +static int macrowarn(struct mdoc *, int, const char *); +static int pstring(struct mdoc *, int, int, + const char *, size_t); +#ifdef __linux__ +extern size_t strlcpy(char *, const char *, size_t); +#endif + + const struct mdoc_node * -mdoc_node(const struct mdoc *mdoc) +mdoc_node(const struct mdoc *m) { - return(mdoc->first); + return(MDOC_HALT & m->flags ? NULL : m->first); } const struct mdoc_meta * -mdoc_meta(const struct mdoc *mdoc) +mdoc_meta(const struct mdoc *m) { - return(&mdoc->meta); + return(MDOC_HALT & m->flags ? NULL : &m->meta); } -void -mdoc_free(struct mdoc *mdoc) +/* + * Frees volatile resources (parse tree, meta-data, fields). + */ +static void +mdoc_free1(struct mdoc *mdoc) { if (mdoc->first) mdoc_node_freelist(mdoc->first); - if (mdoc->htab) - mdoc_tokhash_free(mdoc->htab); if (mdoc->meta.title) free(mdoc->meta.title); if (mdoc->meta.os) free(mdoc->meta.os); if (mdoc->meta.name) free(mdoc->meta.name); - - free(mdoc); + if (mdoc->meta.arch) + free(mdoc->meta.arch); + if (mdoc->meta.vol) + free(mdoc->meta.vol); } -struct mdoc * -mdoc_alloc(void *data, const struct mdoc_cb *cb) +/* + * Allocate all volatile resources (parse tree, meta-data, fields). + */ +static int +mdoc_alloc1(struct mdoc *mdoc) { - struct mdoc *p; - p = xcalloc(1, sizeof(struct mdoc)); + bzero(&mdoc->meta, sizeof(struct mdoc_meta)); + mdoc->flags = 0; + mdoc->lastnamed = mdoc->lastsec = SEC_NONE; + mdoc->last = calloc(1, sizeof(struct mdoc_node)); + if (NULL == mdoc->last) + return(0); - p->data = data; - if (cb) - (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb)); - - p->last = xcalloc(1, sizeof(struct mdoc_node)); - p->last->type = MDOC_ROOT; - p->first = p->last; - - p->next = MDOC_NEXT_CHILD; - p->htab = mdoc_tokhash_alloc(); - - return(p); + mdoc->first = mdoc->last; + mdoc->last->type = MDOC_ROOT; + mdoc->next = MDOC_NEXT_CHILD; + return(1); } +/* + * Free up volatile resources (see mdoc_free1()) then re-initialises the + * data with mdoc_alloc1(). After invocation, parse data has been reset + * and the parser is ready for re-invocation on a new tree; however, + * cross-parse non-volatile data is kept intact. + */ int -mdoc_endparse(struct mdoc *mdoc) +mdoc_reset(struct mdoc *mdoc) { - if (MDOC_HALT & mdoc->flags) - return(0); - if (NULL == mdoc->first) - return(1); - - assert(mdoc->last); - if ( ! macro_end(mdoc)) { - mdoc->flags |= MDOC_HALT; - return(0); - } - return(1); + mdoc_free1(mdoc); + return(mdoc_alloc1(mdoc)); } /* - * Main line-parsing routine. If the line is a macro-line (started with - * a '.' control character), then pass along to the parser, which parses - * subsequent macros until the end of line. If normal text, simply - * append the entire line to the chain. + * Completely free up all volatile and non-volatile parse resources. + * After invocation, the pointer is no longer usable. */ -int -mdoc_parseln(struct mdoc *mdoc, int line, char *buf) +void +mdoc_free(struct mdoc *mdoc) { - int c, i; - char tmp[5]; - if (MDOC_HALT & mdoc->flags) - return(0); + mdoc_free1(mdoc); + if (mdoc->htab) + mdoc_hash_free(mdoc->htab); + free(mdoc); +} - mdoc->linetok = 0; - if ('.' != *buf) { - /* - * Free-form text. Not allowed in the prologue. - */ - if (SEC_PROLOGUE == mdoc->lastnamed) - return(mdoc_perr(mdoc, line, 0, - "no text in prologue")); +/* + * Allocate volatile and non-volatile parse resources. + */ +struct mdoc * +mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb) +{ + struct mdoc *p; - if ( ! mdoc_word_alloc(mdoc, line, 0, buf)) - return(0); - mdoc->next = MDOC_NEXT_SIBLING; - return(1); - } + if (NULL == (p = calloc(1, sizeof(struct mdoc)))) + return(NULL); + if (cb) + (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb)); - /* - * Control-character detected. Begin the parsing sequence. - */ + p->data = data; + p->pflags = pflags; - if (buf[1] && '\\' == buf[1]) - if (buf[2] && '\"' == buf[2]) - return(1); + if (NULL == (p->htab = mdoc_hash_alloc())) { + free(p); + return(NULL); + } else if (mdoc_alloc1(p)) + return(p); - i = 1; - while (buf[i] && ! isspace((u_char)buf[i]) && - i < (int)sizeof(tmp)) - i++; + free(p); + return(NULL); +} - if (i == (int)sizeof(tmp)) { - mdoc->flags |= MDOC_HALT; - return(mdoc_perr(mdoc, line, 1, "unknown macro")); - } else if (i <= 2) { - mdoc->flags |= MDOC_HALT; - return(mdoc_perr(mdoc, line, 1, "unknown macro")); - } - i--; +/* + * Climb back up the parse tree, validating open scopes. Mostly calls + * through to macro_end() in macro.c. + */ +int +mdoc_endparse(struct mdoc *m) +{ - (void)memcpy(tmp, buf + 1, (size_t)i); - tmp[i++] = 0; - - if (MDOC_MAX == (c = mdoc_find(mdoc, tmp))) { - mdoc->flags |= MDOC_HALT; - return(mdoc_perr(mdoc, line, 1, "unknown macro")); - } - - while (buf[i] && isspace((u_char)buf[i])) - i++; - - if ( ! mdoc_macro(mdoc, c, line, 1, &i, buf)) { - mdoc->flags |= MDOC_HALT; + if (MDOC_HALT & m->flags) return(0); - } - - return(1); + else if (mdoc_macroend(m)) + return(1); + m->flags |= MDOC_HALT; + return(0); } -void -mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...) +/* + * Main parse routine. Parses a single line -- really just hands off to + * the macro (parsemacro()) or text parser (parsetext()). + */ +int +mdoc_parseln(struct mdoc *m, int ln, char *buf) { - char buf[256]; - va_list ap; - if (NULL == mdoc->cb.mdoc_msg) - return; + if (MDOC_HALT & m->flags) + return(0); - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf); + return('.' == *buf ? parsemacro(m, ln, buf) : + parsetext(m, ln, buf)); } @@ -283,13 +312,13 @@ mdoc_verr(struct mdoc *mdoc, int ln, int pos, va_start(ap, fmt); (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); va_end(ap); + return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf)); } int -mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, - enum mdoc_warn type, const char *fmt, ...) +mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...) { char buf[256]; va_list ap; @@ -300,400 +329,403 @@ mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, va_start(ap, fmt); (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); va_end(ap); - return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf)); + + return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, buf)); } int -mdoc_macro(struct mdoc *mdoc, int tok, - int ln, int ppos, int *pos, char *buf) +mdoc_err(struct mdoc *m, int line, int pos, int iserr, enum merr type) { + const char *p; - assert(mdoc_macros[tok].fp); + p = __mdoc_merrnames[(int)type]; + assert(p); + if (iserr) + return(mdoc_verr(m, line, pos, p)); + + return(mdoc_vwarn(m, line, pos, p)); +} + + +int +mdoc_macro(struct mdoc *m, int tok, + int ln, int pp, int *pos, char *buf) +{ + if (MDOC_PROLOGUE & mdoc_macros[tok].flags && - SEC_PROLOGUE != mdoc->lastnamed) - return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document body")); + MDOC_PBODY & m->flags) + return(mdoc_perr(m, ln, pp, EPROLBODY)); if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) && - SEC_PROLOGUE == mdoc->lastnamed) - return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document prologue")); - if (1 != ppos && ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) - return(mdoc_perr(mdoc, ln, ppos, "macro not callable")); - return((*mdoc_macros[tok].fp)(mdoc, tok, ln, ppos, pos, buf)); + ! (MDOC_PBODY & m->flags)) + return(mdoc_perr(m, ln, pp, EBODYPROL)); + + if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) + return(mdoc_perr(m, ln, pp, ENOCALL)); + + return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf)); } static int -mdoc_node_append(struct mdoc *mdoc, struct mdoc_node *p) +node_append(struct mdoc *mdoc, struct mdoc_node *p) { - const char *nn, *nt, *on, *ot, *act; assert(mdoc->last); assert(mdoc->first); assert(MDOC_ROOT != p->type); - /* See if we exceed the suggest line-max. */ - - switch (p->type) { - case (MDOC_TEXT): - /* FALLTHROUGH */ - case (MDOC_ELEM): - /* FALLTHROUGH */ - case (MDOC_BLOCK): - mdoc->linetok++; - break; - default: - break; - } - - /* This sort-of works (re-opening of text macros...). */ - if (mdoc->linetok > MDOC_LINEARG_SOFTMAX) - if ( ! mdoc_nwarn(mdoc, p, WARN_COMPAT, - "suggested %d tokens per line exceeded (has %d)", - MDOC_LINEARG_SOFTMAX, mdoc->linetok)) - return(0); - - if (MDOC_TEXT == mdoc->last->type) - on = ""; - else if (MDOC_ROOT == mdoc->last->type) - on = ""; - else - on = mdoc_macronames[mdoc->last->tok]; - - if (MDOC_TEXT == p->type) - nn = ""; - else if (MDOC_ROOT == p->type) - nn = ""; - else - nn = mdoc_macronames[p->tok]; - - ot = mdoc_type2a(mdoc->last->type); - nt = mdoc_type2a(p->type); - switch (mdoc->next) { case (MDOC_NEXT_SIBLING): mdoc->last->next = p; p->prev = mdoc->last; p->parent = mdoc->last->parent; - act = "sibling"; break; case (MDOC_NEXT_CHILD): mdoc->last->child = p; p->parent = mdoc->last; - act = "child"; break; default: abort(); /* NOTREACHED */ } + p->parent->nchild++; + if ( ! mdoc_valid_pre(mdoc, p)) return(0); + if ( ! mdoc_action_pre(mdoc, p)) + return(0); switch (p->type) { case (MDOC_HEAD): assert(MDOC_BLOCK == p->parent->type); - p->parent->data.block.head = p; + p->parent->head = p; break; case (MDOC_TAIL): assert(MDOC_BLOCK == p->parent->type); - p->parent->data.block.tail = p; + p->parent->tail = p; break; case (MDOC_BODY): assert(MDOC_BLOCK == p->parent->type); - p->parent->data.block.body = p; + p->parent->body = p; break; default: break; } mdoc->last = p; - mdoc_msg(mdoc, "parse: %s `%s' %s of %s `%s'", - nt, nn, act, ot, on); + + switch (p->type) { + case (MDOC_TEXT): + if ( ! mdoc_valid_post(mdoc)) + return(0); + if ( ! mdoc_action_post(mdoc)) + return(0); + break; + default: + break; + } + return(1); } static struct mdoc_node * -mdoc_node_alloc(const struct mdoc *mdoc) +node_alloc(struct mdoc *m, int line, + int pos, int tok, enum mdoc_type type) { struct mdoc_node *p; - p = xcalloc(1, sizeof(struct mdoc_node)); - p->sec = mdoc->lastsec; + if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) { + (void)mdoc_nerr(m, m->last, EMALLOC); + return(NULL); + } + p->sec = m->lastsec; + p->line = line; + p->pos = pos; + p->tok = tok; + if (MDOC_TEXT != (p->type = type)) + assert(p->tok >= 0); + return(p); } int -mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok) +mdoc_tail_alloc(struct mdoc *m, int line, int pos, int tok) { struct mdoc_node *p; - assert(mdoc->first); - assert(mdoc->last); - - p = mdoc_node_alloc(mdoc); - - p->line = line; - p->pos = pos; - p->type = MDOC_TAIL; - p->tok = tok; - - return(mdoc_node_append(mdoc, p)); + p = node_alloc(m, line, pos, tok, MDOC_TAIL); + if (NULL == p) + return(0); + return(node_append(m, p)); } int -mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok) +mdoc_head_alloc(struct mdoc *m, int line, int pos, int tok) { struct mdoc_node *p; - assert(mdoc->first); - assert(mdoc->last); + assert(m->first); + assert(m->last); - p = mdoc_node_alloc(mdoc); - - p->line = line; - p->pos = pos; - p->type = MDOC_HEAD; - p->tok = tok; - - return(mdoc_node_append(mdoc, p)); + p = node_alloc(m, line, pos, tok, MDOC_HEAD); + if (NULL == p) + return(0); + return(node_append(m, p)); } int -mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok) +mdoc_body_alloc(struct mdoc *m, int line, int pos, int tok) { struct mdoc_node *p; - assert(mdoc->first); - assert(mdoc->last); - - p = mdoc_node_alloc(mdoc); - - p->line = line; - p->pos = pos; - p->type = MDOC_BODY; - p->tok = tok; - - return(mdoc_node_append(mdoc, p)); + p = node_alloc(m, line, pos, tok, MDOC_BODY); + if (NULL == p) + return(0); + return(node_append(m, p)); } int -mdoc_root_alloc(struct mdoc *mdoc) +mdoc_block_alloc(struct mdoc *m, int line, int pos, + int tok, struct mdoc_arg *args) { struct mdoc_node *p; - p = mdoc_node_alloc(mdoc); - - p->type = MDOC_ROOT; - - return(mdoc_node_append(mdoc, p)); + p = node_alloc(m, line, pos, tok, MDOC_BLOCK); + if (NULL == p) + return(0); + p->args = args; + if (p->args) + (args->refcnt)++; + return(node_append(m, p)); } int -mdoc_block_alloc(struct mdoc *mdoc, int line, int pos, - int tok, size_t argsz, const struct mdoc_arg *args) +mdoc_elem_alloc(struct mdoc *m, int line, int pos, + int tok, struct mdoc_arg *args) { struct mdoc_node *p; - p = mdoc_node_alloc(mdoc); - - p->pos = pos; - p->line = line; - p->type = MDOC_BLOCK; - p->tok = tok; - p->data.block.argc = argsz; - p->data.block.argv = argdup(argsz, args); - - return(mdoc_node_append(mdoc, p)); + p = node_alloc(m, line, pos, tok, MDOC_ELEM); + if (NULL == p) + return(0); + p->args = args; + if (p->args) + (args->refcnt)++; + return(node_append(m, p)); } -int -mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos, - int tok, size_t argsz, const struct mdoc_arg *args) +static int +pstring(struct mdoc *m, int line, int pos, const char *p, size_t len) { - struct mdoc_node *p; + struct mdoc_node *n; + size_t sv; - p = mdoc_node_alloc(mdoc); + n = node_alloc(m, line, pos, -1, MDOC_TEXT); + if (NULL == n) + return(mdoc_nerr(m, m->last, EMALLOC)); - p->line = line; - p->pos = pos; - p->type = MDOC_ELEM; - p->tok = tok; - p->data.elem.argc = argsz; - p->data.elem.argv = argdup(argsz, args); + n->string = malloc(len + 1); + if (NULL == n->string) { + free(n); + return(mdoc_nerr(m, m->last, EMALLOC)); + } - return(mdoc_node_append(mdoc, p)); + sv = strlcpy(n->string, p, len + 1); + + /* Prohibit truncation. */ + assert(sv < len + 1); + + return(node_append(m, n)); } int -mdoc_word_alloc(struct mdoc *mdoc, - int line, int pos, const char *word) +mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p) { - struct mdoc_node *p; - p = mdoc_node_alloc(mdoc); - - p->line = line; - p->pos = pos; - p->type = MDOC_TEXT; - p->data.text.string = xstrdup(word); - - return(mdoc_node_append(mdoc, p)); + return(pstring(m, line, pos, p, strlen(p))); } -static void -argfree(size_t sz, struct mdoc_arg *p) +void +mdoc_node_free(struct mdoc_node *p) { - int i, j; - if (0 == sz) - return; - - assert(p); - /* LINTED */ - for (i = 0; i < (int)sz; i++) - if (p[i].sz > 0) { - assert(p[i].value); - /* LINTED */ - for (j = 0; j < (int)p[i].sz; j++) - free(p[i].value[j]); - free(p[i].value); - } + if (p->parent) + p->parent->nchild--; + if (p->string) + free(p->string); + if (p->args) + mdoc_argv_free(p->args); free(p); } -static void -mdoc_elem_free(struct mdoc_elem *p) +void +mdoc_node_freelist(struct mdoc_node *p) { - argfree(p->argc, p->argv); + if (p->child) + mdoc_node_freelist(p->child); + if (p->next) + mdoc_node_freelist(p->next); + + assert(0 == p->nchild); + mdoc_node_free(p); } -static void -mdoc_block_free(struct mdoc_block *p) +/* + * Parse free-form text, that is, a line that does not begin with the + * control character. + */ +static int +parsetext(struct mdoc *m, int line, char *buf) { + int i, j; - argfree(p->argc, p->argv); -} + if (SEC_NONE == m->lastnamed) + return(mdoc_perr(m, line, 0, ETEXTPROL)); + + /* + * If in literal mode, then pass the buffer directly to the + * back-end, as it should be preserved as a single term. + */ + if (MDOC_LITERAL & m->flags) { + if ( ! mdoc_word_alloc(m, line, 0, buf)) + return(0); + m->next = MDOC_NEXT_SIBLING; + return(1); + } -static void -mdoc_text_free(struct mdoc_text *p) -{ + /* Disallow blank/white-space lines in non-literal mode. */ - if (p->string) - free(p->string); -} + for (i = 0; ' ' == buf[i]; i++) + /* Skip leading whitespace. */ ; + if (0 == buf[i]) + return(mdoc_perr(m, line, 0, ENOBLANK)); + /* + * Break apart a free-form line into tokens. Spaces are + * stripped out of the input. + */ -void -mdoc_node_free(struct mdoc_node *p) -{ + for (j = i; buf[i]; i++) { + if (' ' != buf[i]) + continue; - switch (p->type) { - case (MDOC_TEXT): - mdoc_text_free(&p->data.text); - break; - case (MDOC_ELEM): - mdoc_elem_free(&p->data.elem); - break; - case (MDOC_BLOCK): - mdoc_block_free(&p->data.block); - break; - default: - break; + /* Escaped whitespace. */ + if (i && ' ' == buf[i] && '\\' == buf[i - 1]) + continue; + + buf[i++] = 0; + if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j))) + return(0); + m->next = MDOC_NEXT_SIBLING; + + for ( ; ' ' == buf[i]; i++) + /* Skip trailing whitespace. */ ; + + j = i; + if (0 == buf[i]) + break; } - free(p); + if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j))) + return(0); + + m->next = MDOC_NEXT_SIBLING; + return(1); } -void -mdoc_node_freelist(struct mdoc_node *p) -{ - if (p->child) - mdoc_node_freelist(p->child); - if (p->next) - mdoc_node_freelist(p->next); - mdoc_node_free(p); +static int +macrowarn(struct mdoc *m, int ln, const char *buf) +{ + if ( ! (MDOC_IGN_MACRO & m->pflags)) + return(mdoc_verr(m, ln, 0, + "unknown macro: %s%s", + buf, strlen(buf) > 3 ? "..." : "")); + return(mdoc_vwarn(m, ln, 0, "unknown macro: %s%s", + buf, strlen(buf) > 3 ? "..." : "")); } +/* + * Parse a macro line, that is, a line beginning with the control + * character. + */ int -mdoc_find(const struct mdoc *mdoc, const char *key) +parsemacro(struct mdoc *m, int ln, char *buf) { + int i, c; + char mac[5]; - return(mdoc_tokhash_find(mdoc->htab, key)); -} + /* Empty lines are ignored. */ + if (0 == buf[1]) + return(1); -static void -argcpy(struct mdoc_arg *dst, const struct mdoc_arg *src) -{ - int i; + if (' ' == buf[1]) { + i = 2; + while (buf[i] && ' ' == buf[i]) + i++; + if (0 == buf[i]) + return(1); + return(mdoc_perr(m, ln, 1, ESPACE)); + } - dst->line = src->line; - dst->pos = src->pos; - dst->arg = src->arg; - if (0 == (dst->sz = src->sz)) - return; - dst->value = xcalloc(dst->sz, sizeof(char *)); - for (i = 0; i < (int)dst->sz; i++) - dst->value[i] = xstrdup(src->value[i]); -} + /* Copy the first word into a nil-terminated buffer. */ + for (i = 1; i < 5; i++) { + if (0 == (mac[i - 1] = buf[i])) + break; + else if (' ' == buf[i]) + break; + } -static struct mdoc_arg * -argdup(size_t argsz, const struct mdoc_arg *args) -{ - struct mdoc_arg *pp; - int i; + mac[i - 1] = 0; - if (0 == argsz) - return(NULL); + if (i == 5 || i <= 2) { + if ( ! macrowarn(m, ln, mac)) + goto err; + return(1); + } + + if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) { + if ( ! macrowarn(m, ln, mac)) + goto err; + return(1); + } - pp = xcalloc((size_t)argsz, sizeof(struct mdoc_arg)); - for (i = 0; i < (int)argsz; i++) - argcpy(&pp[i], &args[i]); + /* The macro is sane. Jump to the next word. */ - return(pp); -} + while (buf[i] && ' ' == buf[i]) + i++; + /* Begin recursive parse sequence. */ -/* FIXME: deprecate. */ -char * -mdoc_node2a(struct mdoc_node *node) -{ - static char buf[64]; + if ( ! mdoc_macro(m, c, ln, 1, &i, buf)) + goto err; - assert(node); + return(1); - buf[0] = 0; - (void)xstrlcat(buf, mdoc_type2a(node->type), 64); - if (MDOC_ROOT == node->type) - return(buf); - (void)xstrlcat(buf, " `", 64); - if (MDOC_TEXT == node->type) - (void)xstrlcat(buf, node->data.text.string, 64); - else - (void)xstrlcat(buf, mdoc_macronames[node->tok], 64); - (void)xstrlcat(buf, "'", 64); +err: /* Error out. */ - return(buf); + m->flags |= MDOC_HALT; + return(0); } - -