=================================================================== RCS file: /cvs/mandoc/html.c,v retrieving revision 1.29 retrieving revision 1.91 diff -u -p -r1.29 -r1.91 --- mandoc/html.c 2009/09/16 09:41:24 1.29 +++ mandoc/html.c 2009/11/16 08:46:58 1.91 @@ -1,4 +1,4 @@ -/* $Id: html.c,v 1.29 2009/09/16 09:41:24 kristaps Exp $ */ +/* $Id: html.c,v 1.91 2009/11/16 08:46:58 kristaps Exp $ */ /* * Copyright (c) 2008, 2009 Kristaps Dzonsons * @@ -14,65 +14,65 @@ * 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 "mdoc.h" -#include "man.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" -enum htmltag { - TAG_HTML, - TAG_HEAD, - TAG_BODY, - TAG_META, - TAG_TITLE, - TAG_DIV, - TAG_H1, - TAG_H2, - TAG_P, - TAG_SPAN, - TAG_LINK, - TAG_MAX -}; - -enum htmlattr { - ATTR_HTTPEQUIV, - ATTR_CONTENT, - ATTR_NAME, - ATTR_REL, - ATTR_HREF, - ATTR_TYPE, - ATTR_MEDIA, - ATTR_CLASS, - ATTR_MAX -}; - struct htmldata { - char *name; + const char *name; int flags; -#define HTML_BLOCK (1 << 0) +#define HTML_CLRLINE (1 << 0) +#define HTML_NOSTACK (1 << 1) }; static const struct htmldata htmltags[TAG_MAX] = { - {"html", HTML_BLOCK}, /* TAG_HTML */ - {"head", HTML_BLOCK}, /* TAG_HEAD */ - {"body", HTML_BLOCK}, /* TAG_BODY */ - {"meta", HTML_BLOCK}, /* TAG_META */ - {"title", HTML_BLOCK}, /* TAG_TITLE */ - {"div", HTML_BLOCK}, /* TAG_DIV */ + {"html", HTML_CLRLINE}, /* TAG_HTML */ + {"head", HTML_CLRLINE}, /* TAG_HEAD */ + {"body", HTML_CLRLINE}, /* TAG_BODY */ + {"meta", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_META */ + {"title", HTML_CLRLINE}, /* TAG_TITLE */ + {"div", HTML_CLRLINE}, /* TAG_DIV */ {"h1", 0}, /* TAG_H1 */ {"h2", 0}, /* TAG_H2 */ - {"p", HTML_BLOCK}, /* TAG_P */ + {"p", HTML_CLRLINE}, /* TAG_P */ {"span", 0}, /* TAG_SPAN */ - {"link", HTML_BLOCK}, /* TAG_LINK */ + {"link", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_LINK */ + {"br", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_LINK */ + {"a", 0}, /* TAG_A */ + {"table", HTML_CLRLINE}, /* TAG_TABLE */ + {"col", HTML_CLRLINE | HTML_NOSTACK}, /* 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 */ }; -static const char *const htmlattrs[ATTR_MAX] = { +static const char *const htmlfonts[HTMLFONT_MAX] = { + "roman", + "bold", + "italic" +}; + +static const char *const htmlattrs[ATTR_MAX] = { "http-equiv", "content", "name", @@ -80,516 +80,322 @@ static const char *const htmlattrs[ATTR_MAX] = { "href", "type", "media", - "class" + "class", + "style", + "width", + "valign", + "target", + "id", + "summary", }; -struct htmlpair { - enum htmlattr key; - char *val; -}; +#ifdef __linux__ +extern int getsubopt(char **, char * const *, char **); +#endif -struct html { - int flags; -#define HTML_NOSPACE (1 << 0) -}; -#define MDOC_ARGS const struct mdoc_meta *m, \ - const struct mdoc_node *n, \ - struct html *h -#define MAN_ARGS const struct man_meta *m, \ - const struct man_node *n, \ - struct html *h -struct htmlmdoc { - int (*pre)(MDOC_ARGS); - void (*post)(MDOC_ARGS); -}; - -static void print_gen_doctype(struct html *); -static void print_gen_head(struct html *); -static void print_mdoc(MDOC_ARGS); -static void print_mdoc_head(MDOC_ARGS); -static void print_mdoc_node(MDOC_ARGS); -static void print_man(MAN_ARGS); -static void print_man_head(MAN_ARGS); -static void print_man_body(MAN_ARGS); -static void print_otag(struct html *, enum htmltag, - int, const struct htmlpair *); +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(const char *); -static void print_text(struct html *, const char *); -static int mdoc_root_pre(MDOC_ARGS); -static void mdoc_root_post(MDOC_ARGS); +static int print_encode(struct html *, const char *, int); +static void print_metaf(struct html *, enum roffdeco); -static int mdoc_nd_pre(MDOC_ARGS); -static int mdoc_nm_pre(MDOC_ARGS); -static void mdoc_nm_post(MDOC_ARGS); -static int mdoc_pp_pre(MDOC_ARGS); -static int mdoc_sh_pre(MDOC_ARGS); -static void mdoc_sh_post(MDOC_ARGS); -static int mdoc_ss_pre(MDOC_ARGS); -static void mdoc_ss_post(MDOC_ARGS); -static const struct htmlmdoc mdocs[MDOC_MAX] = { - {NULL, NULL}, /* Ap */ - {NULL, NULL}, /* Dd */ - {NULL, NULL}, /* Dt */ - {NULL, NULL}, /* Os */ - {mdoc_sh_pre, mdoc_sh_post }, /* Sh */ - {mdoc_ss_pre, mdoc_ss_post }, /* Ss */ - {mdoc_pp_pre, NULL}, /* Pp */ - {NULL, NULL}, /* D1 */ - {NULL, NULL}, /* Dl */ - {NULL, NULL}, /* Bd */ - {NULL, NULL}, /* Ed */ - {NULL, NULL}, /* Bl */ - {NULL, NULL}, /* El */ - {NULL, NULL}, /* It */ - {NULL, NULL}, /* Ad */ - {NULL, NULL}, /* An */ - {NULL, NULL}, /* Ar */ - {NULL, NULL}, /* Cd */ - {NULL, NULL}, /* Cm */ - {NULL, NULL}, /* Dv */ - {NULL, NULL}, /* Er */ - {NULL, NULL}, /* Ev */ - {NULL, NULL}, /* Ex */ - {NULL, NULL}, /* Fa */ - {NULL, NULL}, /* Fd */ - {NULL, NULL}, /* Fl */ - {NULL, NULL}, /* Fn */ - {NULL, NULL}, /* Ft */ - {NULL, NULL}, /* Ic */ - {NULL, NULL}, /* In */ - {NULL, NULL}, /* Li */ - {mdoc_nd_pre, NULL}, /* Nd */ - {mdoc_nm_pre, mdoc_nm_post}, /* Nm */ - {NULL, NULL}, /* Op */ - {NULL, NULL}, /* Ot */ - {NULL, NULL}, /* Pa */ - {NULL, NULL}, /* Rv */ - {NULL, NULL}, /* St */ - {NULL, NULL}, /* Va */ - {NULL, NULL}, /* Vt */ - {NULL, NULL}, /* Xr */ - {NULL, NULL}, /* %A */ - {NULL, NULL}, /* %B */ - {NULL, NULL}, /* %D */ - {NULL, NULL}, /* %I */ - {NULL, NULL}, /* %J */ - {NULL, NULL}, /* %N */ - {NULL, NULL}, /* %O */ - {NULL, NULL}, /* %P */ - {NULL, NULL}, /* %R */ - {NULL, NULL}, /* %T */ - {NULL, NULL}, /* %V */ - {NULL, NULL}, /* Ac */ - {NULL, NULL}, /* Ao */ - {NULL, NULL}, /* Aq */ - {NULL, NULL}, /* At */ - {NULL, NULL}, /* Bc */ - {NULL, NULL}, /* Bf */ - {NULL, NULL}, /* Bo */ - {NULL, NULL}, /* Bq */ - {NULL, NULL}, /* Bsx */ - {NULL, NULL}, /* Bx */ - {NULL, NULL}, /* Db */ - {NULL, NULL}, /* Dc */ - {NULL, NULL}, /* Do */ - {NULL, NULL}, /* Dq */ - {NULL, NULL}, /* Ec */ - {NULL, NULL}, /* Ef */ - {NULL, NULL}, /* Em */ - {NULL, NULL}, /* Eo */ - {NULL, NULL}, /* Fx */ - {NULL, NULL}, /* Ms */ - {NULL, NULL}, /* No */ - {NULL, NULL}, /* Ns */ - {NULL, NULL}, /* Nx */ - {NULL, NULL}, /* Ox */ - {NULL, NULL}, /* Pc */ - {NULL, NULL}, /* Pf */ - {NULL, NULL}, /* Po */ - {NULL, NULL}, /* Pq */ - {NULL, NULL}, /* Qc */ - {NULL, NULL}, /* Ql */ - {NULL, NULL}, /* Qo */ - {NULL, NULL}, /* Qq */ - {NULL, NULL}, /* Re */ - {NULL, NULL}, /* Rs */ - {NULL, NULL}, /* Sc */ - {NULL, NULL}, /* So */ - {NULL, NULL}, /* Sq */ - {NULL, NULL}, /* Sm */ - {NULL, NULL}, /* Sx */ - {NULL, NULL}, /* Sy */ - {NULL, NULL}, /* Tn */ - {NULL, NULL}, /* Ux */ - {NULL, NULL}, /* Xc */ - {NULL, NULL}, /* Xo */ - {NULL, NULL}, /* Fo */ - {NULL, NULL}, /* Fc */ - {NULL, NULL}, /* Oo */ - {NULL, NULL}, /* Oc */ - {NULL, NULL}, /* Bk */ - {NULL, NULL}, /* Ek */ - {NULL, NULL}, /* Bt */ - {NULL, NULL}, /* Hf */ - {NULL, NULL}, /* Fr */ - {NULL, NULL}, /* Ud */ - {NULL, NULL}, /* Lb */ - {NULL, NULL}, /* Lp */ - {NULL, NULL}, /* Lk */ - {NULL, NULL}, /* Mt */ - {NULL, NULL}, /* Brq */ - {NULL, NULL}, /* Bro */ - {NULL, NULL}, /* Brc */ - {NULL, NULL}, /* %C */ - {NULL, NULL}, /* Es */ - {NULL, NULL}, /* En */ - {NULL, NULL}, /* Dx */ - {NULL, NULL}, /* %Q */ - {NULL, NULL}, /* br */ - {NULL, NULL}, /* sp */ -}; - - -int -html_mdoc(void *arg, const struct mdoc *m) +void * +html_alloc(char *outopts) { - struct html *h; - - h = (struct html *)arg; - - print_gen_doctype(h); - print_otag(h, TAG_HTML, 0, NULL); - print_mdoc(mdoc_meta(m), mdoc_node(m), h); - print_ctag(h, TAG_HTML); - printf("\n"); - return(1); -} - - -int -html_man(void *arg, const struct man *m) -{ struct html *h; + const char *toks[4]; + char *v; - h = (struct html *)arg; + toks[0] = "style"; + toks[1] = "man"; + toks[2] = "includes"; + toks[3] = NULL; - print_gen_doctype(h); - print_otag(h, TAG_HTML, 0, NULL); - print_man(man_meta(m), man_node(m), h); - print_ctag(h, TAG_HTML); - printf("\n"); - return(1); -} + h = calloc(1, sizeof(struct html)); + if (NULL == h) { + perror(NULL); + exit(EXIT_FAILURE); + } + h->tags.head = NULL; + h->ords.head = NULL; + h->symtab = chars_init(CHARS_HTML); -void * -html_alloc(void) -{ + while (outopts && *outopts) + switch (getsubopt(&outopts, UNCONST(toks), &v)) { + case (0): + h->style = v; + break; + case (1): + h->base_man = v; + break; + case (2): + h->base_includes = v; + break; + default: + break; + } - return(calloc(1, sizeof(struct html))); + return(h); } void html_free(void *p) { + struct tag *tag; + struct ord *ord; + struct html *h; - free(p); -} + h = (struct html *)p; + while ((ord = h->ords.head) != NULL) { + h->ords.head = ord->next; + free(ord); + } -static void -print_mdoc(MDOC_ARGS) -{ + while ((tag = h->tags.head) != NULL) { + h->tags.head = tag->next; + free(tag); + } + + if (h->symtab) + chars_free(h->symtab); - print_otag(h, TAG_HEAD, 0, NULL); - print_mdoc_head(m, n, h); - print_ctag(h, TAG_HEAD); - print_otag(h, TAG_BODY, 0, NULL); - print_mdoc_node(m, n, h); - print_ctag(h, TAG_BODY); + free(h); } -static void +void print_gen_head(struct html *h) { - struct htmlpair meta0[2]; - struct htmlpair meta1[2]; - struct htmlpair link[4]; + struct htmlpair tag[4]; - meta0[0].key = ATTR_HTTPEQUIV; - meta0[0].val = "Content-Type"; - meta0[1].key = ATTR_CONTENT; - meta0[1].val = "text/html; charest-utf-8"; + tag[0].key = ATTR_HTTPEQUIV; + tag[0].val = "Content-Type"; + tag[1].key = ATTR_CONTENT; + tag[1].val = "text/html; charset=utf-8"; + print_otag(h, TAG_META, 2, tag); - meta1[0].key = ATTR_NAME; - meta1[0].val = "resource-type"; - meta1[1].key = ATTR_CONTENT; - meta1[1].val = "document"; + tag[0].key = ATTR_NAME; + tag[0].val = "resource-type"; + tag[1].key = ATTR_CONTENT; + tag[1].val = "document"; + print_otag(h, TAG_META, 2, tag); - link[0].key = ATTR_REL; - link[0].val = "stylesheet"; - link[1].key = ATTR_HREF; - link[1].val = "style.css"; - link[2].key = ATTR_TYPE; - link[2].val = "text/css"; - link[3].key = ATTR_MEDIA; - link[3].val = "all"; - - print_otag(h, TAG_META, 2, meta0); - print_otag(h, TAG_META, 2, meta1); - print_otag(h, TAG_LINK, 4, link); + if (h->style) { + tag[0].key = ATTR_REL; + tag[0].val = "stylesheet"; + tag[1].key = ATTR_HREF; + tag[1].val = h->style; + tag[2].key = ATTR_TYPE; + tag[2].val = "text/css"; + tag[3].key = ATTR_MEDIA; + tag[3].val = "all"; + print_otag(h, TAG_LINK, 4, tag); + } } static void -print_mdoc_head(MDOC_ARGS) +print_spec(struct html *h, const char *p, size_t len) { + const char *rhs; + size_t sz; - print_gen_head(h); - print_otag(h, TAG_TITLE, 0, NULL); - print_encode(m->title); - print_ctag(h, TAG_TITLE); -} + rhs = chars_a2ascii(h->symtab, p, len, &sz); - -static int -mdoc_root_pre(MDOC_ARGS) -{ - struct htmlpair div; - - div.key = ATTR_CLASS; - div.val = "body"; - - print_otag(h, TAG_DIV, 1, &div); - return(1); + if (NULL == rhs) + return; + fwrite(rhs, 1, sz, stdout); } static void -mdoc_root_post(MDOC_ARGS) +print_res(struct html *h, const char *p, size_t len) { + const char *rhs; + size_t sz; - print_ctag(h, TAG_DIV); -} + rhs = chars_a2res(h->symtab, p, len, &sz); - -static int -mdoc_ss_pre(MDOC_ARGS) -{ - - if (MDOC_BODY == n->type) - print_otag(h, TAG_P, 0, NULL); - if (MDOC_HEAD == n->type) - print_otag(h, TAG_H2, 0, NULL); - return(1); + if (NULL == rhs) + return; + fwrite(rhs, 1, sz, stdout); } -static void -mdoc_ss_post(MDOC_ARGS) +struct tag * +print_ofont(struct html *h, enum htmlfont font) { + struct htmlpair tag; - if (MDOC_BODY == n->type) - print_ctag(h, TAG_P); - if (MDOC_HEAD == n->type) - print_ctag(h, TAG_H2); -} + h->metal = h->metac; + h->metac = font; + /* FIXME: DECO_ROMAN should just close out preexisting. */ -static int -mdoc_pp_pre(MDOC_ARGS) -{ + if (h->metaf && h->tags.head == h->metaf) + print_tagq(h, h->metaf); - print_otag(h, TAG_P, 0, NULL); - return(0); + PAIR_CLASS_INIT(&tag, htmlfonts[font]); + h->metaf = print_otag(h, TAG_SPAN, 1, &tag); + return(h->metaf); } -static int -mdoc_nd_pre(MDOC_ARGS) -{ - - if (MDOC_BODY == n->type) - print_text(h, "--"); - return(1); -} - - -static int -mdoc_nm_pre(MDOC_ARGS) -{ - struct htmlpair class; - - class.key = ATTR_CLASS; - class.val = "name"; - - print_otag(h, TAG_SPAN, 1, &class); - if (NULL == n->child) - print_text(h, m->name); - - return(1); -} - - static void -mdoc_nm_post(MDOC_ARGS) +print_metaf(struct html *h, enum roffdeco deco) { + enum htmlfont font; - print_ctag(h, TAG_SPAN); -} - - -static int -mdoc_sh_pre(MDOC_ARGS) -{ - - if (MDOC_BODY == n->type) - print_otag(h, TAG_P, 0, NULL); - if (MDOC_HEAD == n->type) - print_otag(h, TAG_H1, 0, NULL); - return(1); -} - - -static void -mdoc_sh_post(MDOC_ARGS) -{ - - if (MDOC_BODY == n->type) - print_ctag(h, TAG_P); - if (MDOC_HEAD == n->type) - print_ctag(h, TAG_H1); -} - - -static void -print_mdoc_node(MDOC_ARGS) -{ - int child; - - child = 1; - - switch (n->type) { - case (MDOC_ROOT): - child = mdoc_root_pre(m, n, h); + switch (deco) { + case (DECO_PREVIOUS): + font = h->metal; break; - case (MDOC_TEXT): - print_text(h, n->string); + case (DECO_ITALIC): + font = HTMLFONT_ITALIC; break; - default: - if (mdocs[n->tok].pre) - child = (*mdocs[n->tok].pre)(m, n, h); + case (DECO_BOLD): + font = HTMLFONT_BOLD; break; - } - - if (child && n->child) - print_mdoc_node(m, n->child, h); - - switch (n->type) { - case (MDOC_ROOT): - mdoc_root_post(m, n, h); + case (DECO_ROMAN): + font = HTMLFONT_NONE; break; - case (MDOC_TEXT): - break; default: - if (mdocs[n->tok].post) - (*mdocs[n->tok].post)(m, n, h); - break; + abort(); + /* NOTREACHED */ } - if (n->next) - print_mdoc_node(m, n->next, h); + (void)print_ofont(h, font); } -static void -print_man(MAN_ARGS) +static int +print_encode(struct html *h, const char *p, int norecurse) { + size_t sz; + int len, nospace; + const char *seq; + enum roffdeco deco; - print_otag(h, TAG_HEAD, 0, NULL); - print_man_head(m, n, h); - print_ctag(h, TAG_HEAD); - print_otag(h, TAG_BODY, 0, NULL); - print_man_body(m, n, h); - print_ctag(h, TAG_BODY); -} + nospace = 0; + for (; *p; p++) { + sz = strcspn(p, "\\<>&"); -static void -print_man_head(MAN_ARGS) -{ + fwrite(p, 1, sz, stdout); + p += /* LINTED */ + sz; - print_gen_head(h); - print_otag(h, TAG_TITLE, 0, NULL); - print_encode(m->title); - print_ctag(h, TAG_TITLE); -} + if ('<' == *p) { + printf("<"); + continue; + } else if ('>' == *p) { + printf(">"); + continue; + } else if ('&' == *p) { + printf("&"); + continue; + } else if ('\0' == *p) + break; + seq = ++p; + len = a2roffdeco(&deco, &seq, &sz); -static void -print_man_body(MAN_ARGS) -{ -} + switch (deco) { + case (DECO_RESERVED): + print_res(h, seq, sz); + break; + case (DECO_SPECIAL): + print_spec(h, seq, sz); + break; + case (DECO_PREVIOUS): + /* FALLTHROUGH */ + case (DECO_BOLD): + /* FALLTHROUGH */ + case (DECO_ITALIC): + /* FALLTHROUGH */ + case (DECO_ROMAN): + if (norecurse) + break; + print_metaf(h, deco); + break; + default: + break; + } + p += len - 1; -static void -print_encode(const char *p) -{ + if (DECO_NOSPACE == deco && '\0' == *(p + 1)) + nospace = 1; + } - printf("%s", p); /* XXX */ + return(nospace); } -static void +struct tag * print_otag(struct html *h, enum htmltag tag, int sz, const struct htmlpair *p) { int i; + struct tag *t; + if ( ! (HTML_NOSTACK & htmltags[tag].flags)) { + t = malloc(sizeof(struct tag)); + if (NULL == t) { + perror(NULL); + exit(EXIT_FAILURE); + } + t->tag = tag; + t->next = h->tags.head; + h->tags.head = t; + } else + t = NULL; + if ( ! (HTML_NOSPACE & h->flags)) - if ( ! (HTML_BLOCK & htmltags[tag].flags)) - printf(" "); + if ( ! (HTML_CLRLINE & htmltags[tag].flags)) + putchar(' '); printf("<%s", htmltags[tag].name); for (i = 0; i < sz; i++) { printf(" %s=\"", htmlattrs[p[i].key]); assert(p->val); - print_encode(p[i].val); - printf("\""); + (void)print_encode(h, p[i].val, 1); + putchar('\"'); } - printf(">"); + putchar('>'); h->flags |= HTML_NOSPACE; - + return(t); } -/* ARGSUSED */ static void print_ctag(struct html *h, enum htmltag tag) { printf("", htmltags[tag].name); - if (HTML_BLOCK & htmltags[tag].flags) + if (HTML_CLRLINE & htmltags[tag].flags) { h->flags |= HTML_NOSPACE; + putchar('\n'); + } } /* ARGSUSED */ -static void +void print_gen_doctype(struct html *h) { - printf("\n", DOCTYPE, DTD); + printf("", DOCTYPE, DTD); } -static void +void print_text(struct html *h, const char *p) { @@ -612,17 +418,19 @@ print_text(struct html *h, const char *p) case(']'): /* FALLTHROUGH */ case('}'): - h->flags |= HTML_NOSPACE; + if ( ! (HTML_IGNDELIM & h->flags)) + h->flags |= HTML_NOSPACE; + break; default: break; } if ( ! (h->flags & HTML_NOSPACE)) - printf(" "); - h->flags &= ~HTML_NOSPACE; + putchar(' '); - if (p) - print_encode(p); + assert(p); + if ( ! print_encode(h, p, 0)) + h->flags &= ~HTML_NOSPACE; if (*p && 0 == *(p + 1)) switch (*p) { @@ -632,7 +440,227 @@ print_text(struct html *h, const char *p) /* FALLTHROUGH */ case('{'): h->flags |= HTML_NOSPACE; + break; default: break; } +} + + +void +print_tagq(struct html *h, const struct tag *until) +{ + struct tag *tag; + + while ((tag = h->tags.head) != NULL) { + if (tag == h->metaf) + h->metaf = NULL; + print_ctag(h, tag->tag); + h->tags.head = tag->next; + free(tag); + if (until && tag == until) + return; + } +} + + +void +print_stagq(struct html *h, const struct tag *suntil) +{ + struct tag *tag; + + while ((tag = h->tags.head) != NULL) { + if (suntil && tag == suntil) + return; + if (tag == h->metaf) + h->metaf = NULL; + print_ctag(h, tag->tag); + h->tags.head = tag->next; + free(tag); + } +} + + +void +bufinit(struct html *h) +{ + + h->buf[0] = '\0'; + h->buflen = 0; +} + + +void +bufcat_style(struct html *h, const char *key, const char *val) +{ + + bufcat(h, key); + bufncat(h, ":", 1); + bufcat(h, val); + bufncat(h, ";", 1); +} + + +void +bufcat(struct html *h, const char *p) +{ + + bufncat(h, p, strlen(p)); +} + + +void +buffmt(struct html *h, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + (void)vsnprintf(h->buf + (int)h->buflen, + BUFSIZ - h->buflen - 1, fmt, ap); + va_end(ap); + h->buflen = strlen(h->buf); +} + + +void +bufncat(struct html *h, const char *p, size_t sz) +{ + + if (h->buflen + sz > BUFSIZ - 1) + sz = BUFSIZ - 1 - h->buflen; + + (void)strncat(h->buf, p, sz); + h->buflen += sz; +} + + +void +buffmt_includes(struct html *h, const char *name) +{ + const char *p, *pp; + + pp = h->base_includes; + + while (NULL != (p = strchr(pp, '%'))) { + bufncat(h, pp, (size_t)(p - pp)); + switch (*(p + 1)) { + case('I'): + bufcat(h, name); + break; + default: + bufncat(h, p, 2); + break; + } + pp = p + 2; + } + if (pp) + bufcat(h, pp); +} + + +void +buffmt_man(struct html *h, + const char *name, const char *sec) +{ + const char *p, *pp; + + pp = h->base_man; + + /* LINTED */ + while (NULL != (p = strchr(pp, '%'))) { + bufncat(h, pp, (size_t)(p - pp)); + switch (*(p + 1)) { + case('S'): + bufcat(h, sec ? sec : "1"); + break; + case('N'): + buffmt(h, name); + break; + default: + bufncat(h, p, 2); + break; + } + pp = p + 2; + } + if (pp) + bufcat(h, pp); +} + + +void +bufcat_su(struct html *h, const char *p, const struct roffsu *su) +{ + double v; + const char *u; + + v = su->scale; + + switch (su->unit) { + case (SCALE_CM): + u = "cm"; + break; + case (SCALE_IN): + u = "in"; + break; + case (SCALE_PC): + u = "pc"; + break; + case (SCALE_PT): + u = "pt"; + break; + case (SCALE_EM): + u = "em"; + break; + case (SCALE_MM): + if (0 == (v /= 100)) + v = 1; + u = "em"; + break; + case (SCALE_EN): + u = "ex"; + break; + case (SCALE_BU): + u = "ex"; + break; + case (SCALE_VS): + u = "em"; + break; + default: + u = "ex"; + break; + } + + if (su->pt) + buffmt(h, "%s: %f%s;", p, v, u); + else + /* LINTED */ + buffmt(h, "%s: %d%s;", p, (int)v, u); +} + + +void +html_idcat(char *dst, const char *src, int sz) +{ + int ssz; + + assert(sz); + + /* 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--; + + for ( ; *src != '\0' && sz > 1; src++) { + ssz = snprintf(dst, (size_t)sz, "%.2x", *src); + sz -= ssz; + dst += ssz; + } }