=================================================================== RCS file: /cvs/mandoc/html.c,v retrieving revision 1.82 retrieving revision 1.138 diff -u -p -r1.82 -r1.138 --- mandoc/html.c 2009/11/09 05:11:46 1.82 +++ mandoc/html.c 2011/05/14 16:28:23 1.138 @@ -1,6 +1,7 @@ -/* $Id: html.c,v 1.82 2009/11/09 05:11:46 kristaps Exp $ */ +/* $Id: html.c,v 1.138 2011/05/14 16:28:23 kristaps Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons + * Copyright (c) 2011 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 @@ -14,6 +15,10 @@ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + #include #include @@ -25,77 +30,85 @@ #include #include +#include "mandoc.h" +#include "libmandoc.h" #include "out.h" -#include "chars.h" #include "html.h" #include "main.h" -#define UNCONST(a) ((void *)(uintptr_t)(const void *)(a)) - -#define DOCTYPE "-//W3C//DTD HTML 4.01//EN" -#define DTD "http://www.w3.org/TR/html4/strict.dtd" - struct htmldata { const char *name; int flags; #define HTML_CLRLINE (1 << 0) #define HTML_NOSTACK (1 << 1) +#define HTML_AUTOCLOSE (1 << 2) /* Tag has auto-closure. */ }; static const struct htmldata htmltags[TAG_MAX] = { {"html", HTML_CLRLINE}, /* TAG_HTML */ {"head", HTML_CLRLINE}, /* TAG_HEAD */ {"body", HTML_CLRLINE}, /* TAG_BODY */ - {"meta", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_META */ + {"meta", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_META */ {"title", HTML_CLRLINE}, /* TAG_TITLE */ {"div", HTML_CLRLINE}, /* TAG_DIV */ {"h1", 0}, /* TAG_H1 */ {"h2", 0}, /* TAG_H2 */ - {"p", HTML_CLRLINE}, /* TAG_P */ {"span", 0}, /* TAG_SPAN */ - {"link", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_LINK */ - {"br", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_LINK */ + {"link", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_LINK */ + {"br", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */ {"a", 0}, /* TAG_A */ {"table", HTML_CLRLINE}, /* TAG_TABLE */ - {"col", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_COL */ + {"tbody", HTML_CLRLINE}, /* TAG_TBODY */ + {"col", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */ {"tr", HTML_CLRLINE}, /* TAG_TR */ {"td", HTML_CLRLINE}, /* TAG_TD */ {"li", HTML_CLRLINE}, /* TAG_LI */ {"ul", HTML_CLRLINE}, /* TAG_UL */ {"ol", HTML_CLRLINE}, /* TAG_OL */ - {"base", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_BASE */ + {"dl", HTML_CLRLINE}, /* TAG_DL */ + {"dt", HTML_CLRLINE}, /* TAG_DT */ + {"dd", HTML_CLRLINE}, /* TAG_DD */ + {"blockquote", HTML_CLRLINE}, /* TAG_BLOCKQUOTE */ + {"p", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_P */ + {"pre", HTML_CLRLINE }, /* TAG_PRE */ + {"b", 0 }, /* TAG_B */ + {"i", 0 }, /* TAG_I */ + {"code", 0 }, /* TAG_CODE */ + {"small", 0 }, /* TAG_SMALL */ }; static const char *const htmlattrs[ATTR_MAX] = { - "http-equiv", - "content", - "name", - "rel", - "href", - "type", - "media", - "class", - "style", - "width", - "valign", - "target", - "id", - "summary", + "http-equiv", /* ATTR_HTTPEQUIV */ + "content", /* ATTR_CONTENT */ + "name", /* ATTR_NAME */ + "rel", /* ATTR_REL */ + "href", /* ATTR_HREF */ + "type", /* ATTR_TYPE */ + "media", /* ATTR_MEDIA */ + "class", /* ATTR_CLASS */ + "style", /* ATTR_STYLE */ + "width", /* ATTR_WIDTH */ + "id", /* ATTR_ID */ + "summary", /* ATTR_SUMMARY */ + "align", /* ATTR_ALIGN */ + "colspan", /* ATTR_COLSPAN */ }; -#ifdef __linux__ -extern int getsubopt(char **, char * const *, char **); -#endif - - -static void print_spec(struct html *, const char *, int); -static void print_res(struct html *, const char *, int); +static void print_num(struct html *, const char *, size_t); +static void print_spec(struct html *, const char *, size_t); +static void print_res(struct html *, const char *, size_t); static void print_ctag(struct html *, enum htmltag); -static void print_encode(struct html *, const char *); +static void print_doctype(struct html *); +static void print_xmltype(struct html *); +static int print_encode(struct html *, const char *, int); +static void print_metaf(struct html *, enum mandoc_esc); +static void print_attr(struct html *, + const char *, const char *); +static void *ml_alloc(char *, enum htmltype); -void * -html_alloc(char *outopts) +static void * +ml_alloc(char *outopts, enum htmltype type) { struct html *h; const char *toks[4]; @@ -106,15 +119,11 @@ html_alloc(char *outopts) toks[2] = "includes"; toks[3] = NULL; - h = calloc(1, sizeof(struct html)); - if (NULL == h) { - perror(NULL); - exit(EXIT_FAILURE); - } + h = mandoc_calloc(1, sizeof(struct html)); + h->type = type; h->tags.head = NULL; - h->ords.head = NULL; - h->symtab = chars_init(CHARS_HTML); + h->symtab = mchars_alloc(); while (outopts && *outopts) switch (getsubopt(&outopts, UNCONST(toks), &v)) { @@ -134,28 +143,37 @@ html_alloc(char *outopts) return(h); } +void * +html_alloc(char *outopts) +{ + return(ml_alloc(outopts, HTML_HTML_4_01_STRICT)); +} + + +void * +xhtml_alloc(char *outopts) +{ + + return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT)); +} + + void html_free(void *p) { struct tag *tag; - struct ord *ord; struct html *h; h = (struct html *)p; - while ((ord = h->ords.head) != NULL) { - h->ords.head = ord->next; - free(ord); - } - while ((tag = h->tags.head) != NULL) { h->tags.head = tag->next; free(tag); } if (h->symtab) - chars_free(h->symtab); + mchars_free(h->symtab); free(h); } @@ -191,81 +209,212 @@ print_gen_head(struct html *h) } } +/* ARGSUSED */ +static void +print_num(struct html *h, const char *p, size_t len) +{ + char c; + if ('\0' != (c = mchars_num2char(p, len))) + putchar((int)c); +} + static void -print_spec(struct html *h, const char *p, int len) +print_spec(struct html *h, const char *p, size_t len) { + int cp; const char *rhs; size_t sz; - rhs = chars_a2ascii(h->symtab, p, (size_t)len, &sz); - - if (NULL == rhs) + if ((cp = mchars_spec2cp(h->symtab, p, len)) > 0) { + printf("&#%d;", cp); return; - fwrite(rhs, 1, sz, stdout); + } else if (-1 == cp && 1 == len) { + fwrite(p, 1, len, stdout); + return; + } else if (-1 == cp) + return; + + if (NULL != (rhs = mchars_spec2str(h->symtab, p, len, &sz))) + fwrite(rhs, 1, sz, stdout); } static void -print_res(struct html *h, const char *p, int len) +print_res(struct html *h, const char *p, size_t len) { + int cp; const char *rhs; size_t sz; - rhs = chars_a2res(h->symtab, p, (size_t)len, &sz); - - if (NULL == rhs) + if ((cp = mchars_res2cp(h->symtab, p, len)) > 0) { + printf("&#%d;", cp); return; - fwrite(rhs, 1, sz, stdout); + } else if (-1 == cp) + return; + + if (NULL != (rhs = mchars_res2str(h->symtab, p, len, &sz))) + fwrite(rhs, 1, sz, stdout); } static void -print_encode(struct html *h, const char *p) +print_metaf(struct html *h, enum mandoc_esc deco) { + enum htmlfont font; + + switch (deco) { + case (ESCAPE_FONTPREV): + font = h->metal; + break; + case (ESCAPE_FONTITALIC): + font = HTMLFONT_ITALIC; + break; + case (ESCAPE_FONTBOLD): + font = HTMLFONT_BOLD; + break; + case (ESCAPE_FONTROMAN): + font = HTMLFONT_NONE; + break; + default: + abort(); + /* NOTREACHED */ + } + + if (h->metaf) { + print_tagq(h, h->metaf); + h->metaf = NULL; + } + + h->metal = h->metac; + h->metac = font; + + if (HTMLFONT_NONE != font) + h->metaf = HTMLFONT_BOLD == font ? + print_otag(h, TAG_B, 0, NULL) : + print_otag(h, TAG_I, 0, NULL); +} + +int +html_strlen(const char *cp) +{ + int ssz, sz; + const char *seq, *p; + + /* + * Account for escaped sequences within string length + * calculations. This follows the logic in term_strlen() as we + * must calculate the width of produced strings. + * Assume that characters are always width of "1". This is + * hacky, but it gets the job done for approximation of widths. + */ + + sz = 0; + while (NULL != (p = strchr(cp, '\\'))) { + sz += (int)(p - cp); + ++cp; + switch (mandoc_escape(&cp, &seq, &ssz)) { + case (ESCAPE_ERROR): + return(sz); + case (ESCAPE_PREDEF): + sz++; + break; + case (ESCAPE_SPECIAL): + sz++; + break; + default: + break; + } + } + + assert(sz >= 0); + return(sz + strlen(cp)); +} + +static int +print_encode(struct html *h, const char *p, int norecurse) +{ size_t sz; - int len; + int len, nospace; const char *seq; - enum roffdeco deco; + enum mandoc_esc esc; + static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' }; - for (; *p; p++) { - sz = strcspn(p, "\\<>&"); + nospace = 0; + while ('\0' != *p) { + sz = strcspn(p, rejs); + fwrite(p, 1, sz, stdout); - p += /* LINTED */ - sz; + p += (int)sz; - if ('<' == *p) { + if ('\0' == *p) + break; + + switch (*p++) { + case ('<'): printf("<"); continue; - } else if ('>' == *p) { + case ('>'): printf(">"); continue; - } else if ('&' == *p) { + case ('&'): printf("&"); continue; - } else if ('\0' == *p) + case (ASCII_HYPH): + putchar('-'); + continue; + default: break; + } - seq = ++p; - len = a2roffdeco(&deco, &seq, &sz); + esc = mandoc_escape(&p, &seq, &len); + if (ESCAPE_ERROR == esc) + break; - switch (deco) { - case (DECO_RESERVED): - print_res(h, seq, sz); + switch (esc) { + case (ESCAPE_NUMBERED): + print_num(h, seq, len); break; - case (DECO_SPECIAL): - print_spec(h, seq, sz); + case (ESCAPE_PREDEF): + print_res(h, seq, len); break; + case (ESCAPE_SPECIAL): + print_spec(h, seq, len); + break; + case (ESCAPE_FONTPREV): + /* FALLTHROUGH */ + case (ESCAPE_FONTBOLD): + /* FALLTHROUGH */ + case (ESCAPE_FONTITALIC): + /* FALLTHROUGH */ + case (ESCAPE_FONTROMAN): + if (norecurse) + break; + print_metaf(h, esc); + break; + case (ESCAPE_NOSPACE): + if ('\0' == *p) + nospace = 1; + break; default: break; } - - p += len - 1; } + + return(nospace); } +static void +print_attr(struct html *h, const char *key, const char *val) +{ + printf(" %s=\"", key); + (void)print_encode(h, val, 1); + putchar('\"'); +} + + struct tag * print_otag(struct html *h, enum htmltag tag, int sz, const struct htmlpair *p) @@ -273,12 +422,10 @@ print_otag(struct html *h, enum htmltag tag, int i; struct tag *t; + /* Push this tags onto the stack of open scopes. */ + if ( ! (HTML_NOSTACK & htmltags[tag].flags)) { - t = malloc(sizeof(struct tag)); - if (NULL == t) { - perror(NULL); - exit(EXIT_FAILURE); - } + t = mandoc_malloc(sizeof(struct tag)); t->tag = tag; t->next = h->tags.head; h->tags.head = t; @@ -286,29 +433,57 @@ print_otag(struct html *h, enum htmltag tag, t = NULL; if ( ! (HTML_NOSPACE & h->flags)) - if ( ! (HTML_CLRLINE & htmltags[tag].flags)) - putchar(' '); + if ( ! (HTML_CLRLINE & htmltags[tag].flags)) { + /* Manage keeps! */ + if ( ! (HTML_KEEP & h->flags)) { + if (HTML_PREKEEP & h->flags) + h->flags |= HTML_KEEP; + putchar(' '); + } else + printf(" "); + } + if ( ! (h->flags & HTML_NONOSPACE)) + h->flags &= ~HTML_NOSPACE; + else + h->flags |= HTML_NOSPACE; + + /* Print out the tag name and attributes. */ + printf("<%s", htmltags[tag].name); - for (i = 0; i < sz; i++) { - printf(" %s=\"", htmlattrs[p[i].key]); - assert(p->val); - print_encode(h, p[i].val); - putchar('\"'); + for (i = 0; i < sz; i++) + print_attr(h, htmlattrs[p[i].key], p[i].val); + + /* Add non-overridable attributes. */ + + if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) { + print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml"); + print_attr(h, "xml:lang", "en"); + print_attr(h, "lang", "en"); } + + /* Accommodate for XML "well-formed" singleton escaping. */ + + if (HTML_AUTOCLOSE & htmltags[tag].flags) + switch (h->type) { + case (HTML_XHTML_1_0_STRICT): + putchar('/'); + break; + default: + break; + } + putchar('>'); h->flags |= HTML_NOSPACE; - if (HTML_CLRLINE & htmltags[tag].flags) - h->flags |= HTML_NEWLINE; - else - h->flags &= ~HTML_NEWLINE; + if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags) + putchar('\n'); + return(t); } -/* ARGSUSED */ static void print_ctag(struct html *h, enum htmltag tag) { @@ -316,73 +491,84 @@ print_ctag(struct html *h, enum htmltag tag) printf("", htmltags[tag].name); if (HTML_CLRLINE & htmltags[tag].flags) { h->flags |= HTML_NOSPACE; - h->flags |= HTML_NEWLINE; putchar('\n'); - } else - h->flags &= ~HTML_NEWLINE; + } } -/* ARGSUSED */ void -print_gen_doctype(struct html *h) +print_gen_decls(struct html *h) { - - printf("", DOCTYPE, DTD); + + print_xmltype(h); + print_doctype(h); } +static void +print_xmltype(struct html *h) +{ + + if (HTML_XHTML_1_0_STRICT == h->type) + puts(""); +} + + +static void +print_doctype(struct html *h) +{ + const char *doctype; + const char *dtd; + const char *name; + + switch (h->type) { + case (HTML_HTML_4_01_STRICT): + name = "HTML"; + doctype = "-//W3C//DTD HTML 4.01//EN"; + dtd = "http://www.w3.org/TR/html4/strict.dtd"; + break; + default: + name = "html"; + doctype = "-//W3C//DTD XHTML 1.0 Strict//EN"; + dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"; + break; + } + + printf("\n", + name, doctype, dtd); +} + void -print_text(struct html *h, const char *p) +print_text(struct html *h, const char *word) { - if (*p && 0 == *(p + 1)) - switch (*p) { - case('.'): - /* FALLTHROUGH */ - case(','): - /* FALLTHROUGH */ - case(';'): - /* FALLTHROUGH */ - case(':'): - /* FALLTHROUGH */ - case('?'): - /* FALLTHROUGH */ - case('!'): - /* FALLTHROUGH */ - case(')'): - /* FALLTHROUGH */ - case(']'): - /* FALLTHROUGH */ - case('}'): - if ( ! (HTML_IGNDELIM & h->flags)) - h->flags |= HTML_NOSPACE; - break; - default: - break; - } + if ( ! (HTML_NOSPACE & h->flags)) { + /* Manage keeps! */ + if ( ! (HTML_KEEP & h->flags)) { + if (HTML_PREKEEP & h->flags) + h->flags |= HTML_KEEP; + putchar(' '); + } else + printf(" "); + } - if ( ! (h->flags & HTML_NOSPACE)) - putchar(' '); + assert(NULL == h->metaf); + if (HTMLFONT_NONE != h->metac) + h->metaf = HTMLFONT_BOLD == h->metac ? + print_otag(h, TAG_B, 0, NULL) : + print_otag(h, TAG_I, 0, NULL); - h->flags &= ~HTML_NOSPACE; - h->flags &= ~HTML_NEWLINE; + assert(word); + if ( ! print_encode(h, word, 0)) + if ( ! (h->flags & HTML_NONOSPACE)) + h->flags &= ~HTML_NOSPACE; - if (p) - print_encode(h, p); + if (h->metaf) { + print_tagq(h, h->metaf); + h->metaf = NULL; + } - if (*p && 0 == *(p + 1)) - switch (*p) { - case('('): - /* FALLTHROUGH */ - case('['): - /* FALLTHROUGH */ - case('{'): - h->flags |= HTML_NOSPACE; - break; - default: - break; - } + h->flags &= ~HTML_IGNDELIM; } @@ -392,6 +578,14 @@ print_tagq(struct html *h, const struct tag *until) struct tag *tag; while ((tag = h->tags.head) != NULL) { + /* + * Remember to close out and nullify the current + * meta-font and table, if applicable. + */ + if (tag == h->metaf) + h->metaf = NULL; + if (tag == h->tblt) + h->tblt = NULL; print_ctag(h, tag->tag); h->tags.head = tag->next; free(tag); @@ -409,6 +603,14 @@ print_stagq(struct html *h, const struct tag *suntil) while ((tag = h->tags.head) != NULL) { if (suntil && tag == suntil) return; + /* + * Remember to close out and nullify the current + * meta-font and table, if applicable. + */ + if (tag == h->metaf) + h->metaf = NULL; + if (tag == h->tblt) + h->tblt = NULL; print_ctag(h, tag->tag); h->tags.head = tag->next; free(tag); @@ -565,11 +767,11 @@ bufcat_su(struct html *h, const char *p, const struct break; } - if (su->pt) - buffmt(h, "%s: %f%s;", p, v, u); - else - /* LINTED */ - buffmt(h, "%s: %d%s;", p, (int)v, u); + /* + * XXX: the CSS spec isn't clear as to which types accept + * integer or real numbers, so we just make them all decimals. + */ + buffmt(h, "%s: %.2f%s;", p, v, u); } @@ -578,20 +780,24 @@ html_idcat(char *dst, const char *src, int sz) { int ssz; - assert(sz); + assert(sz > 2); /* Cf. . */ - for ( ; *dst != '\0' && sz; dst++, sz--) - /* Jump to end. */ ; - - assert(sz > 2); - /* We can't start with a number (bah). */ - *dst++ = 'x'; - *dst = '\0'; - sz--; + if ('#' == *dst) { + dst++; + sz--; + } + if ('\0' == *dst) { + *dst++ = 'x'; + *dst = '\0'; + sz--; + } + + for ( ; *dst != '\0' && sz; dst++, sz--) + /* Jump to end. */ ; for ( ; *src != '\0' && sz > 1; src++) { ssz = snprintf(dst, (size_t)sz, "%.2x", *src);