=================================================================== RCS file: /cvs/mandoc/mdoc.c,v retrieving revision 1.103 retrieving revision 1.228 diff -u -p -r1.103 -r1.228 --- mandoc/mdoc.c 2009/08/20 11:44:47 1.103 +++ mandoc/mdoc.c 2014/10/20 15:50:24 1.228 @@ -1,6 +1,7 @@ -/* $Id: mdoc.c,v 1.103 2009/08/20 11:44:47 kristaps Exp $ */ +/* $Id: mdoc.c,v 1.228 2014/10/20 15:50:24 schwarze Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons + * Copyright (c) 2010, 2012, 2013, 2014 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -14,70 +15,25 @@ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include "config.h" + +#include + #include #include #include #include #include #include +#include +#include "mdoc.h" +#include "mandoc.h" +#include "mandoc_aux.h" #include "libmdoc.h" +#include "libmandoc.h" -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 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 */ - "end-of-line scope violation", /* EIMPBRK */ - "empty macro ignored", /* EIGNE */ - "unclosed explicit scope", /* EOPEN */ - "unterminated quoted phrase", /* EQUOTPHR */ - "closure macro without prior context", /* ENOCTX */ - "no description found for library" /* ELIB */ -}; - -const char *const __mdoc_macronames[MDOC_MAX] = { +const char *const __mdoc_macronames[MDOC_MAX + 1] = { "Ap", "Dd", "Dt", "Os", "Sh", "Ss", "Pp", "D1", "Dl", "Bd", "Ed", "Bl", @@ -88,12 +44,9 @@ const char *const __mdoc_macronames[MDOC_MAX] = { "Ic", "In", "Li", "Nd", "Nm", "Op", "Ot", "Pa", "Rv", "St", "Va", "Vt", - /* LINTED */ - "Xr", "\%A", "\%B", "\%D", - /* LINTED */ - "\%I", "\%J", "\%N", "\%O", - /* LINTED */ - "\%P", "\%R", "\%T", "\%V", + "Xr", "%A", "%B", "%D", + "%I", "%J", "%N", "%O", + "%P", "%R", "%T", "%V", "Ac", "Ao", "Aq", "At", "Bc", "Bf", "Bo", "Bq", "Bsx", "Bx", "Db", "Dc", @@ -109,60 +62,53 @@ const char *const __mdoc_macronames[MDOC_MAX] = { "Bk", "Ek", "Bt", "Hf", "Fr", "Ud", "Lb", "Lp", "Lk", "Mt", "Brq", "Bro", - /* LINTED */ - "Brc", "\%C", "Es", "En", - /* LINTED */ - "Dx", "\%Q", "br", "sp" + "Brc", "%C", "Es", "En", + "Dx", "%Q", "br", "sp", + "%U", "Ta", "ll", "text", }; -const char *const __mdoc_argnames[MDOC_ARG_MAX] = { +const char *const __mdoc_argnames[MDOC_ARG_MAX] = { "split", "nosplit", "ragged", - "unfilled", "literal", "file", - "offset", "bullet", "dash", - "hyphen", "item", "enum", - "tag", "diag", "hang", - "ohang", "inset", "column", - "width", "compact", "std", + "unfilled", "literal", "file", + "offset", "bullet", "dash", + "hyphen", "item", "enum", + "tag", "diag", "hang", + "ohang", "inset", "column", + "width", "compact", "std", "filled", "words", "emphasis", - "symbolic", "nested" + "symbolic", "nested", "centered" }; const char * const *mdoc_macronames = __mdoc_macronames; const char * const *mdoc_argnames = __mdoc_argnames; +static void mdoc_node_free(struct mdoc_node *); +static void mdoc_node_unlink(struct mdoc *, + struct mdoc_node *); 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 *, +static void mdoc_alloc1(struct mdoc *); +static struct mdoc_node *node_alloc(struct mdoc *, int, int, + enum mdoct, 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); +static int mdoc_ptext(struct mdoc *, int, char *, int); +static int mdoc_pmacro(struct mdoc *, int, char *, int); -#ifdef __linux__ -extern size_t strlcpy(char *, const char *, size_t); -#endif - const struct mdoc_node * -mdoc_node(const struct mdoc *m) +mdoc_node(const struct mdoc *mdoc) { - return(MDOC_HALT & m->flags ? NULL : m->first); + return(mdoc->first); } - const struct mdoc_meta * -mdoc_meta(const struct mdoc *m) +mdoc_meta(const struct mdoc *mdoc) { - return(MDOC_HALT & m->flags ? NULL : &m->meta); + return(&mdoc->meta); } - /* * Frees volatile resources (parse tree, meta-data, fields). */ @@ -171,56 +117,47 @@ mdoc_free1(struct mdoc *mdoc) { if (mdoc->first) - mdoc_node_freelist(mdoc->first); - if (mdoc->meta.title) - free(mdoc->meta.title); - if (mdoc->meta.os) - free(mdoc->meta.os); - if (mdoc->meta.name) - free(mdoc->meta.name); - if (mdoc->meta.arch) - free(mdoc->meta.arch); - if (mdoc->meta.vol) - free(mdoc->meta.vol); + mdoc_node_delete(mdoc, mdoc->first); + free(mdoc->meta.msec); + free(mdoc->meta.vol); + free(mdoc->meta.arch); + free(mdoc->meta.date); + free(mdoc->meta.title); + free(mdoc->meta.os); + free(mdoc->meta.name); } - /* * Allocate all volatile resources (parse tree, meta-data, fields). */ -static int +static void mdoc_alloc1(struct mdoc *mdoc) { - bzero(&mdoc->meta, sizeof(struct mdoc_meta)); + memset(&mdoc->meta, 0, 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); - + mdoc->last = mandoc_calloc(1, sizeof(struct mdoc_node)); mdoc->first = mdoc->last; mdoc->last->type = MDOC_ROOT; + mdoc->last->tok = MDOC_MAX; 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 +void mdoc_reset(struct mdoc *mdoc) { mdoc_free1(mdoc); - return(mdoc_alloc1(mdoc)); + mdoc_alloc1(mdoc); } - /* * Completely free up all volatile and non-volatile parse resources. * After invocation, the pointer is no longer usable. @@ -230,141 +167,124 @@ mdoc_free(struct mdoc *mdoc) { mdoc_free1(mdoc); - if (mdoc->htab) - mdoc_hash_free(mdoc->htab); free(mdoc); } - /* - * Allocate volatile and non-volatile parse resources. + * Allocate volatile and non-volatile parse resources. */ struct mdoc * -mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb) +mdoc_alloc(struct roff *roff, struct mparse *parse, + const char *defos, int quick) { struct mdoc *p; - if (NULL == (p = calloc(1, sizeof(struct mdoc)))) - return(NULL); - if (cb) - (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb)); + p = mandoc_calloc(1, sizeof(struct mdoc)); - p->data = data; - p->pflags = pflags; + p->parse = parse; + p->defos = defos; + p->quick = quick; + p->roff = roff; - if (NULL == (p->htab = mdoc_hash_alloc())) { - free(p); - return(NULL); - } else if (mdoc_alloc1(p)) - return(p); - - free(p); - return(NULL); + mdoc_hash_init(); + mdoc_alloc1(p); + return(p); } - -/* - * Climb back up the parse tree, validating open scopes. Mostly calls - * through to macro_end() in macro.c. - */ int -mdoc_endparse(struct mdoc *m) +mdoc_endparse(struct mdoc *mdoc) { - if (MDOC_HALT & m->flags) - return(0); - else if (mdoc_macroend(m)) - return(1); - m->flags |= MDOC_HALT; - return(0); + return(mdoc_macroend(mdoc)); } - -/* - * 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) +mdoc_addeqn(struct mdoc *mdoc, const struct eqn *ep) { + struct mdoc_node *n; - if (MDOC_HALT & m->flags) + n = node_alloc(mdoc, ep->ln, ep->pos, MDOC_MAX, MDOC_EQN); + n->eqn = ep; + if (ep->ln > mdoc->last->line) + n->flags |= MDOC_LINE; + + if ( ! node_append(mdoc, n)) return(0); - return('.' == *buf ? parsemacro(m, ln, buf) : - parsetext(m, ln, buf)); + mdoc->next = MDOC_NEXT_SIBLING; + return(1); } - int -mdoc_verr(struct mdoc *mdoc, int ln, int pos, - const char *fmt, ...) +mdoc_addspan(struct mdoc *mdoc, const struct tbl_span *sp) { - char buf[256]; - va_list ap; + struct mdoc_node *n; - if (NULL == mdoc->cb.mdoc_err) + n = node_alloc(mdoc, sp->line, 0, MDOC_MAX, MDOC_TBL); + n->span = sp; + + if ( ! node_append(mdoc, n)) return(0); - 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)); + mdoc->next = MDOC_NEXT_SIBLING; + return(1); } - +/* + * Main parse routine. Parses a single line -- really just hands off to + * the macro (mdoc_pmacro()) or text parser (mdoc_ptext()). + */ int -mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...) +mdoc_parseln(struct mdoc *mdoc, int ln, char *buf, int offs) { - char buf[256]; - va_list ap; - if (NULL == mdoc->cb.mdoc_warn) - return(0); + if (mdoc->last->type != MDOC_EQN || ln > mdoc->last->line) + mdoc->flags |= MDOC_NEWLINE; - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); + /* + * Let the roff nS register switch SYNOPSIS mode early, + * such that the parser knows at all times + * whether this mode is on or off. + * Note that this mode is also switched by the Sh macro. + */ + if (roff_getreg(mdoc->roff, "nS")) + mdoc->flags |= MDOC_SYNOPSIS; + else + mdoc->flags &= ~MDOC_SYNOPSIS; - return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, buf)); + return(roff_getcontrol(mdoc->roff, buf, &offs) ? + mdoc_pmacro(mdoc, ln, buf, offs) : + mdoc_ptext(mdoc, ln, buf, offs)); } - int -mdoc_err(struct mdoc *m, int line, int pos, int iserr, enum merr type) +mdoc_macro(MACRO_PROT_ARGS) { - const char *p; + assert(tok < MDOC_MAX); - p = __mdoc_merrnames[(int)type]; - assert(p); + if (mdoc->flags & MDOC_PBODY) { + if (tok == MDOC_Dt) { + mandoc_vmsg(MANDOCERR_DT_LATE, + mdoc->parse, line, ppos, + "Dt %s", buf + *pos); + return(1); + } + } else if ( ! (mdoc_macros[tok].flags & MDOC_PROLOGUE)) { + if (mdoc->meta.title == NULL) { + mandoc_vmsg(MANDOCERR_DT_NOTITLE, + mdoc->parse, line, ppos, "%s %s", + mdoc_macronames[tok], buf + *pos); + mdoc->meta.title = mandoc_strdup("UNTITLED"); + } + if (NULL == mdoc->meta.vol) + mdoc->meta.vol = mandoc_strdup("LOCAL"); + mdoc->flags |= MDOC_PBODY; + } - if (iserr) - return(mdoc_verr(m, line, pos, p)); - - return(mdoc_vwarn(m, line, pos, p)); + return((*mdoc_macros[tok].fp)(mdoc, tok, line, ppos, pos, buf)); } -int -mdoc_macro(struct mdoc *m, int tok, - int ln, int pp, int *pos, char *buf) -{ - /* - * If we're in the prologue, deny "body" macros. Similarly, if - * we're in the body, deny prologue calls. - */ - if (MDOC_PROLOGUE & mdoc_macros[tok].flags && - MDOC_PBODY & m->flags) - return(mdoc_perr(m, ln, pp, EPROLBODY)); - if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) && - ! (MDOC_PBODY & m->flags)) - return(mdoc_perr(m, ln, pp, EBODYPROL)); - - return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf)); -} - - static int node_append(struct mdoc *mdoc, struct mdoc_node *p) { @@ -374,12 +294,12 @@ node_append(struct mdoc *mdoc, struct mdoc_node *p) assert(MDOC_ROOT != p->type); switch (mdoc->next) { - case (MDOC_NEXT_SIBLING): + case MDOC_NEXT_SIBLING: mdoc->last->next = p; p->prev = mdoc->last; p->parent = mdoc->last->parent; break; - case (MDOC_NEXT_CHILD): + case MDOC_NEXT_CHILD: mdoc->last->child = p; p->parent = mdoc->last; break; @@ -390,21 +310,40 @@ node_append(struct mdoc *mdoc, struct mdoc_node *p) p->parent->nchild++; + /* + * Copy over the normalised-data pointer of our parent. Not + * everybody has one, but copying a null pointer is fine. + */ + + switch (p->type) { + case MDOC_BODY: + if (ENDBODY_NOT != p->end) + break; + /* FALLTHROUGH */ + case MDOC_TAIL: + /* FALLTHROUGH */ + case MDOC_HEAD: + p->norm = p->parent->norm; + break; + default: + break; + } + if ( ! mdoc_valid_pre(mdoc, p)) return(0); - if ( ! mdoc_action_pre(mdoc, p)) - return(0); switch (p->type) { - case (MDOC_HEAD): + case MDOC_HEAD: assert(MDOC_BLOCK == p->parent->type); p->parent->head = p; break; - case (MDOC_TAIL): + case MDOC_TAIL: assert(MDOC_BLOCK == p->parent->type); p->parent->tail = p; break; - case (MDOC_BODY): + case MDOC_BODY: + if (p->end) + break; assert(MDOC_BLOCK == p->parent->type); p->parent->body = p; break; @@ -415,11 +354,11 @@ node_append(struct mdoc *mdoc, struct mdoc_node *p) mdoc->last = p; switch (p->type) { - case (MDOC_TEXT): + case MDOC_TBL: + /* FALLTHROUGH */ + case MDOC_TEXT: if ( ! mdoc_valid_post(mdoc)) return(0); - if ( ! mdoc_action_post(mdoc)) - return(0); break; default: break; @@ -428,157 +367,182 @@ node_append(struct mdoc *mdoc, struct mdoc_node *p) return(1); } - static struct mdoc_node * -node_alloc(struct mdoc *m, int line, - int pos, int tok, enum mdoc_type type) +node_alloc(struct mdoc *mdoc, int line, int pos, + enum mdoct tok, enum mdoc_type type) { struct mdoc_node *p; - if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) { - (void)mdoc_nerr(m, m->last, EMALLOC); - return(NULL); - } - - p->sec = m->lastsec; + p = mandoc_calloc(1, sizeof(struct mdoc_node)); + p->sec = mdoc->lastsec; p->line = line; p->pos = pos; + p->lastline = line; p->tok = tok; - if (MDOC_TEXT != (p->type = type)) - assert(p->tok >= 0); + p->type = type; + /* Flag analysis. */ + + if (MDOC_SYNOPSIS & mdoc->flags) + p->flags |= MDOC_SYNPRETTY; + else + p->flags &= ~MDOC_SYNPRETTY; + if (MDOC_NEWLINE & mdoc->flags) + p->flags |= MDOC_LINE; + mdoc->flags &= ~MDOC_NEWLINE; + return(p); } - int -mdoc_tail_alloc(struct mdoc *m, int line, int pos, int tok) +mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, enum mdoct tok) { struct mdoc_node *p; - p = node_alloc(m, line, pos, tok, MDOC_TAIL); - if (NULL == p) + p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL); + if ( ! node_append(mdoc, p)) return(0); - if ( ! node_append(m, p)) - return(0); - m->next = MDOC_NEXT_CHILD; + mdoc->next = MDOC_NEXT_CHILD; return(1); } - int -mdoc_head_alloc(struct mdoc *m, int line, int pos, int tok) +mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, enum mdoct tok) { struct mdoc_node *p; - assert(m->first); - assert(m->last); + assert(mdoc->first); + assert(mdoc->last); - p = node_alloc(m, line, pos, tok, MDOC_HEAD); - if (NULL == p) + p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD); + if ( ! node_append(mdoc, p)) return(0); - if ( ! node_append(m, p)) - return(0); - m->next = MDOC_NEXT_CHILD; + mdoc->next = MDOC_NEXT_CHILD; return(1); } - int -mdoc_body_alloc(struct mdoc *m, int line, int pos, int tok) +mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, enum mdoct tok) { struct mdoc_node *p; - p = node_alloc(m, line, pos, tok, MDOC_BODY); - if (NULL == p) + p = node_alloc(mdoc, line, pos, tok, MDOC_BODY); + if ( ! node_append(mdoc, p)) return(0); - if ( ! node_append(m, p)) - return(0); - m->next = MDOC_NEXT_CHILD; + mdoc->next = MDOC_NEXT_CHILD; return(1); } - int -mdoc_block_alloc(struct mdoc *m, int line, int pos, - int tok, struct mdoc_arg *args) +mdoc_endbody_alloc(struct mdoc *mdoc, int line, int pos, enum mdoct tok, + struct mdoc_node *body, enum mdoc_endbody end) { struct mdoc_node *p; - p = node_alloc(m, line, pos, tok, MDOC_BLOCK); - if (NULL == p) + p = node_alloc(mdoc, line, pos, tok, MDOC_BODY); + p->pending = body; + p->norm = body->norm; + p->end = end; + if ( ! node_append(mdoc, p)) return(0); + mdoc->next = MDOC_NEXT_SIBLING; + return(1); +} + +int +mdoc_block_alloc(struct mdoc *mdoc, int line, int pos, + enum mdoct tok, struct mdoc_arg *args) +{ + struct mdoc_node *p; + + p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK); p->args = args; if (p->args) (args->refcnt)++; - if ( ! node_append(m, p)) + + switch (tok) { + case MDOC_Bd: + /* FALLTHROUGH */ + case MDOC_Bf: + /* FALLTHROUGH */ + case MDOC_Bl: + /* FALLTHROUGH */ + case MDOC_En: + /* FALLTHROUGH */ + case MDOC_Rs: + p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); + break; + default: + break; + } + + if ( ! node_append(mdoc, p)) return(0); - m->next = MDOC_NEXT_CHILD; + mdoc->next = MDOC_NEXT_CHILD; return(1); } - int -mdoc_elem_alloc(struct mdoc *m, int line, int pos, - int tok, struct mdoc_arg *args) +mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos, + enum mdoct tok, struct mdoc_arg *args) { struct mdoc_node *p; - p = node_alloc(m, line, pos, tok, MDOC_ELEM); - if (NULL == p) - return(0); + p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM); p->args = args; if (p->args) (args->refcnt)++; - if ( ! node_append(m, p)) + + switch (tok) { + case MDOC_An: + p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); + break; + default: + break; + } + + if ( ! node_append(mdoc, p)) return(0); - m->next = MDOC_NEXT_CHILD; + mdoc->next = MDOC_NEXT_CHILD; return(1); } - -static int -pstring(struct mdoc *m, int line, int pos, const char *p, size_t len) +int +mdoc_word_alloc(struct mdoc *mdoc, int line, int pos, const char *p) { struct mdoc_node *n; - size_t sv; - n = node_alloc(m, line, pos, -1, MDOC_TEXT); - if (NULL == n) - return(mdoc_nerr(m, m->last, EMALLOC)); + n = node_alloc(mdoc, line, pos, MDOC_MAX, MDOC_TEXT); + n->string = roff_strdup(mdoc->roff, p); - n->string = malloc(len + 1); - if (NULL == n->string) { - free(n); - return(mdoc_nerr(m, m->last, EMALLOC)); - } - - sv = strlcpy(n->string, p, len + 1); - - /* Prohibit truncation. */ - assert(sv < len + 1); - - if ( ! node_append(m, n)) + if ( ! node_append(mdoc, n)) return(0); - m->next = MDOC_NEXT_SIBLING; + + mdoc->next = MDOC_NEXT_SIBLING; return(1); } - -int -mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p) +void +mdoc_word_append(struct mdoc *mdoc, const char *p) { + struct mdoc_node *n; + char *addstr, *newstr; - return(pstring(m, line, pos, p, strlen(p))); + n = mdoc->last; + addstr = roff_strdup(mdoc->roff, p); + mandoc_asprintf(&newstr, "%s %s", n->string, addstr); + free(addstr); + free(n->string); + n->string = newstr; + mdoc->next = MDOC_NEXT_SIBLING; } - -void +static void mdoc_node_free(struct mdoc_node *p) { - if (p->parent) - p->parent->nchild--; + if (MDOC_BLOCK == p->type || MDOC_ELEM == p->type) + free(p->norm); if (p->string) free(p->string); if (p->args) @@ -586,163 +550,367 @@ mdoc_node_free(struct mdoc_node *p) free(p); } +static void +mdoc_node_unlink(struct mdoc *mdoc, struct mdoc_node *n) +{ + /* Adjust siblings. */ + + if (n->prev) + n->prev->next = n->next; + if (n->next) + n->next->prev = n->prev; + + /* Adjust parent. */ + + if (n->parent) { + n->parent->nchild--; + if (n->parent->child == n) + n->parent->child = n->prev ? n->prev : n->next; + if (n->parent->last == n) + n->parent->last = n->prev ? n->prev : NULL; + } + + /* Adjust parse point, if applicable. */ + + if (mdoc && mdoc->last == n) { + if (n->prev) { + mdoc->last = n->prev; + mdoc->next = MDOC_NEXT_SIBLING; + } else { + mdoc->last = n->parent; + mdoc->next = MDOC_NEXT_CHILD; + } + } + + if (mdoc && mdoc->first == n) + mdoc->first = NULL; +} + void -mdoc_node_freelist(struct mdoc_node *p) +mdoc_node_delete(struct mdoc *mdoc, struct mdoc_node *p) { - if (p->child) - mdoc_node_freelist(p->child); - if (p->next) - mdoc_node_freelist(p->next); - + while (p->child) { + assert(p->nchild); + mdoc_node_delete(mdoc, p->child); + } assert(0 == p->nchild); + + mdoc_node_unlink(mdoc, p); mdoc_node_free(p); } +int +mdoc_node_relink(struct mdoc *mdoc, struct mdoc_node *p) +{ + mdoc_node_unlink(mdoc, p); + return(node_append(mdoc, 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) +mdoc_ptext(struct mdoc *mdoc, int line, char *buf, int offs) { - int i, j; + char *c, *ws, *end; + struct mdoc_node *n; - if (SEC_NONE == m->lastnamed) - return(mdoc_perr(m, line, 0, ETEXTPROL)); - + assert(mdoc->last); + n = mdoc->last; + /* - * If in literal mode, then pass the buffer directly to the - * back-end, as it should be preserved as a single term. + * Divert directly to list processing if we're encountering a + * columnar MDOC_BLOCK with or without a prior MDOC_BLOCK entry + * (a MDOC_BODY means it's already open, in which case we should + * process within its context in the normal way). */ - if (MDOC_LITERAL & m->flags) - return(mdoc_word_alloc(m, line, 0, buf)); + if (MDOC_Bl == n->tok && MDOC_BODY == n->type && + LIST_column == n->norm->Bl.type) { + /* `Bl' is open without any children. */ + mdoc->flags |= MDOC_FREECOL; + return(mdoc_macro(mdoc, MDOC_It, line, offs, &offs, buf)); + } - /* Disallow blank/white-space lines in non-literal mode. */ + if (MDOC_It == n->tok && MDOC_BLOCK == n->type && + NULL != n->parent && + MDOC_Bl == n->parent->tok && + LIST_column == n->parent->norm->Bl.type) { + /* `Bl' has block-level `It' children. */ + mdoc->flags |= MDOC_FREECOL; + return(mdoc_macro(mdoc, MDOC_It, line, offs, &offs, buf)); + } - 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. + * Search for the beginning of unescaped trailing whitespace (ws) + * and for the first character not to be output (end). */ - for (j = i; buf[i]; i++) { - if (' ' != buf[i]) + /* FIXME: replace with strcspn(). */ + ws = NULL; + for (c = end = buf + offs; *c; c++) { + switch (*c) { + case ' ': + if (NULL == ws) + ws = c; continue; + case '\t': + /* + * Always warn about trailing tabs, + * even outside literal context, + * where they should be put on the next line. + */ + if (NULL == ws) + ws = c; + /* + * Strip trailing tabs in literal context only; + * outside, they affect the next line. + */ + if (MDOC_LITERAL & mdoc->flags) + continue; + break; + case '\\': + /* Skip the escaped character, too, if any. */ + if (c[1]) + c++; + /* FALLTHROUGH */ + default: + ws = NULL; + break; + } + end = c + 1; + } + *end = '\0'; - /* Escaped whitespace. */ - if (i && ' ' == buf[i] && '\\' == buf[i - 1]) - continue; + if (ws) + mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse, + line, (int)(ws-buf), NULL); - buf[i++] = 0; - if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j))) + if ('\0' == buf[offs] && ! (MDOC_LITERAL & mdoc->flags)) { + mandoc_msg(MANDOCERR_FI_BLANK, mdoc->parse, + line, (int)(c - buf), NULL); + + /* + * Insert a `sp' in the case of a blank line. Technically, + * blank lines aren't allowed, but enough manuals assume this + * behaviour that we want to work around it. + */ + if ( ! mdoc_elem_alloc(mdoc, line, offs, MDOC_sp, NULL)) return(0); - for ( ; ' ' == buf[i]; i++) - /* Skip trailing whitespace. */ ; + mdoc->next = MDOC_NEXT_SIBLING; - j = i; - if (0 == buf[i]) - break; + return(mdoc_valid_post(mdoc)); } - if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j))) + if ( ! mdoc_word_alloc(mdoc, line, offs, buf+offs)) return(0); - m->next = MDOC_NEXT_SIBLING; - return(1); -} + if (MDOC_LITERAL & mdoc->flags) + return(1); + /* + * End-of-sentence check. If the last character is an unescaped + * EOS character, then flag the node as being the end of a + * sentence. The front-end will know how to interpret this. + */ + assert(buf < end); + if (mandoc_eos(buf+offs, (size_t)(end-buf-offs))) + mdoc->last->flags |= MDOC_EOS; -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 ? "..." : "")); + return(1); } - /* * Parse a macro line, that is, a line beginning with the control * character. */ -int -parsemacro(struct mdoc *m, int ln, char *buf) +static int +mdoc_pmacro(struct mdoc *mdoc, int ln, char *buf, int offs) { - int i, j, c; + enum mdoct tok; + int i, sv; char mac[5]; + struct mdoc_node *n; - /* Empty lines are ignored. */ + sv = offs; - if (0 == buf[1]) - return(1); + /* + * Copy the first word into a nil-terminated buffer. + * Stop copying when a tab, space, or eoln is encountered. + */ - i = 1; + i = 0; + while (i < 4 && '\0' != buf[offs] && ' ' != buf[offs] && + '\t' != buf[offs]) + mac[i++] = buf[offs++]; - /* Accept whitespace after the initial control char. */ + mac[i] = '\0'; - if (' ' == buf[i]) { - i++; - while (buf[i] && ' ' == buf[i]) - i++; - if (0 == buf[i]) - return(1); + tok = (i > 1 && i < 4) ? mdoc_hash_find(mac) : MDOC_MAX; + + if (MDOC_MAX == tok) { + mandoc_msg(MANDOCERR_MACRO, mdoc->parse, + ln, sv, buf + sv - 1); + return(1); } - /* Copy the first word into a nil-terminated buffer. */ + /* Disregard the first trailing tab, if applicable. */ - for (j = 0; j < 4; j++, i++) { - if (0 == (mac[j] = buf[i])) - break; - else if (' ' == buf[i]) - break; + if ('\t' == buf[offs]) + offs++; + + /* Jump to the next non-whitespace word. */ + + while (buf[offs] && ' ' == buf[offs]) + offs++; + + /* + * Trailing whitespace. Note that tabs are allowed to be passed + * into the parser as "text", so we only warn about spaces here. + */ + + if ('\0' == buf[offs] && ' ' == buf[offs - 1]) + mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse, + ln, offs - 1, NULL); + + /* + * If an initial macro or a list invocation, divert directly + * into macro processing. + */ + + if (NULL == mdoc->last || MDOC_It == tok || MDOC_El == tok) + return(mdoc_macro(mdoc, tok, ln, sv, &offs, buf)); + + n = mdoc->last; + assert(mdoc->last); + + /* + * If the first macro of a `Bl -column', open an `It' block + * context around the parsed macro. + */ + + if (MDOC_Bl == n->tok && MDOC_BODY == n->type && + LIST_column == n->norm->Bl.type) { + mdoc->flags |= MDOC_FREECOL; + return(mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf)); } - mac[j] = 0; + /* + * If we're following a block-level `It' within a `Bl -column' + * context (perhaps opened in the above block or in ptext()), + * then open an `It' block context around the parsed macro. + */ - if (j == 4 || j < 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); + if (MDOC_It == n->tok && MDOC_BLOCK == n->type && + NULL != n->parent && + MDOC_Bl == n->parent->tok && + LIST_column == n->parent->norm->Bl.type) { + mdoc->flags |= MDOC_FREECOL; + return(mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf)); } - /* The macro is sane. Jump to the next word. */ + /* Normal processing of a macro. */ - while (buf[i] && ' ' == buf[i]) - i++; + if ( ! mdoc_macro(mdoc, tok, ln, sv, &offs, buf)) + return(0); - /* - * Begin recursive parse sequence. Since we're at the start of - * the line, we don't need to do callable/parseable checks. - */ - if ( ! mdoc_macro(m, c, ln, 1, &i, buf)) - goto err; + /* In quick mode (for mandocdb), abort after the NAME section. */ + if (mdoc->quick && MDOC_Sh == tok && + SEC_NAME != mdoc->last->sec) + return(2); + return(1); +} -err: /* Error out. */ +enum mdelim +mdoc_isdelim(const char *p) +{ - m->flags |= MDOC_HALT; - return(0); + if ('\0' == p[0]) + return(DELIM_NONE); + + if ('\0' == p[1]) + switch (p[0]) { + case '(': + /* FALLTHROUGH */ + case '[': + return(DELIM_OPEN); + case '|': + return(DELIM_MIDDLE); + case '.': + /* FALLTHROUGH */ + case ',': + /* FALLTHROUGH */ + case ';': + /* FALLTHROUGH */ + case ':': + /* FALLTHROUGH */ + case '?': + /* FALLTHROUGH */ + case '!': + /* FALLTHROUGH */ + case ')': + /* FALLTHROUGH */ + case ']': + return(DELIM_CLOSE); + default: + return(DELIM_NONE); + } + + if ('\\' != p[0]) + return(DELIM_NONE); + + if (0 == strcmp(p + 1, ".")) + return(DELIM_CLOSE); + if (0 == strcmp(p + 1, "fR|\\fP")) + return(DELIM_MIDDLE); + + return(DELIM_NONE); } +void +mdoc_deroff(char **dest, const struct mdoc_node *n) +{ + char *cp; + size_t sz; + if (MDOC_TEXT != n->type) { + for (n = n->child; n; n = n->next) + mdoc_deroff(dest, n); + return; + } + + /* Skip leading whitespace. */ + + for (cp = n->string; '\0' != *cp; cp++) + if (0 == isspace((unsigned char)*cp)) + break; + + /* Skip trailing whitespace. */ + + for (sz = strlen(cp); sz; sz--) + if (0 == isspace((unsigned char)cp[sz-1])) + break; + + /* Skip empty strings. */ + + if (0 == sz) + return; + + if (NULL == *dest) { + *dest = mandoc_strndup(cp, sz); + return; + } + + mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp); + free(*dest); + *dest = cp; +}