diff options
Diffstat (limited to 'usr.bin/mandoc/html.c')
| -rw-r--r-- | usr.bin/mandoc/html.c | 236 |
1 files changed, 171 insertions, 65 deletions
diff --git a/usr.bin/mandoc/html.c b/usr.bin/mandoc/html.c index f42a354c3ad..e893103f335 100644 --- a/usr.bin/mandoc/html.c +++ b/usr.bin/mandoc/html.c @@ -1,4 +1,4 @@ -/* $OpenBSD: html.c,v 1.66 2017/01/18 19:22:18 schwarze Exp $ */ +/* $OpenBSD: html.c,v 1.67 2017/01/19 01:00:11 schwarze Exp $ */ /* * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2011-2015, 2017 Ingo Schwarze <schwarze@openbsd.org> @@ -112,10 +112,14 @@ static const char *const roffscales[SCALE_MAX] = { }; static void a2width(const char *, struct roffsu *); -static void html_endline(struct html *); -static void html_indent(struct html *); +static void print_byte(struct html *, char); +static void print_endline(struct html *); +static void print_endword(struct html *); +static void print_indent(struct html *); +static void print_word(struct html *, const char *); + static void print_ctag(struct html *, struct tag *); -static int print_escape(char); +static int print_escape(struct html *, char); static int print_encode(struct html *, const char *, const char *, int); static void print_href(struct html *, const char *, const char *, int); static void print_metaf(struct html *, enum mandoc_esc); @@ -167,15 +171,15 @@ print_gen_head(struct html *h) t = print_otag(h, TAG_STYLE, ""); print_text(h, "table.head, table.foot { width: 100%; }"); - html_endline(h); + print_endline(h); print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }"); - html_endline(h); + print_endline(h); print_text(h, "td.head-vol { text-align: center; }"); - html_endline(h); + print_endline(h); print_text(h, "table.foot td { width: 50%; }"); - html_endline(h); + print_endline(h); print_text(h, "table.head td { width: 33%; }"); - html_endline(h); + print_endline(h); print_text(h, "div.spacer { margin: 1em 0; }"); print_tagq(h, t); @@ -286,27 +290,27 @@ html_strlen(const char *cp) } static int -print_escape(char c) +print_escape(struct html *h, char c) { switch (c) { case '<': - printf("<"); + print_word(h, "<"); break; case '>': - printf(">"); + print_word(h, ">"); break; case '&': - printf("&"); + print_word(h, "&"); break; case '"': - printf("""); + print_word(h, """); break; case ASCII_NBRSP: - printf(" "); + print_word(h, " "); break; case ASCII_HYPH: - putchar('-'); + print_byte(h, '-'); break; case ASCII_BREAK: break; @@ -319,6 +323,7 @@ print_escape(char c) static int print_encode(struct html *h, const char *p, const char *pend, int norecurse) { + char numbuf[16]; size_t sz; int c, len, nospace; const char *seq; @@ -338,17 +343,16 @@ print_encode(struct html *h, const char *p, const char *pend, int norecurse) continue; } - sz = strcspn(p, rejs); - if (p + sz > pend) - sz = pend - p; - - fwrite(p, 1, sz, stdout); - p += (int)sz; + for (sz = strcspn(p, rejs); sz-- && p < pend; p++) + if (*p == ' ') + print_endword(h); + else + print_byte(h, *p); if (p >= pend) break; - if (print_escape(*p++)) + if (print_escape(h, *p++)) continue; esc = mandoc_escape(&p, &seq, &len); @@ -407,10 +411,11 @@ print_encode(struct html *h, const char *p, const char *pend, int norecurse) if ((c < 0x20 && c != 0x09) || (c > 0x7E && c < 0xA0)) c = 0xFFFD; - if (c > 0x7E) - printf("&#%d;", c); - else if ( ! print_escape(c)) - putchar(c); + if (c > 0x7E) { + (void)snprintf(numbuf, sizeof(numbuf), "&#%d;", c); + print_word(h, numbuf); + } else if (print_escape(h, c) == 0) + print_byte(h, c); } return nospace; @@ -426,7 +431,7 @@ print_href(struct html *h, const char *name, const char *sec, int man) print_encode(h, pp, p, 1); if (man && p[1] == 'S') { if (sec == NULL) - putchar('1'); + print_byte(h, '1'); else print_encode(h, sec, NULL, 1); } else if ((man && p[1] == 'N') || @@ -445,6 +450,7 @@ print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) { va_list ap; struct roffsu mysu, *su; + char numbuf[16]; struct tag *t; const char *attr; char *s; @@ -464,16 +470,16 @@ print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) t = NULL; if (tflags & HTML_NLBEFORE) - html_endline(h); - if (h->flags & HTML_NLDONE) - html_indent(h); + print_endline(h); + if (h->col == 0) + print_indent(h); else if ((h->flags & HTML_NOSPACE) == 0) { if (h->flags & HTML_KEEP) - printf(" "); + print_word(h, " "); else { if (h->flags & HTML_PREKEEP) h->flags |= HTML_KEEP; - putchar(' '); + print_endword(h); } } @@ -484,14 +490,15 @@ print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) /* Print out the tag name and attributes. */ - printf("<%s", htmltags[tag].name); + print_byte(h, '<'); + print_word(h, htmltags[tag].name); va_start(ap, fmt); have_style = 0; while (*fmt != '\0') { if (*fmt == 's') { - printf(" style=\""); + print_word(h, " style=\""); have_style = 1; fmt++; break; @@ -514,7 +521,10 @@ print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) default: abort(); } - printf(" %s=\"", attr); + print_byte(h, ' '); + print_word(h, attr); + print_byte(h, '='); + print_byte(h, '"'); switch (*fmt) { case 'M': print_href(h, s, va_arg(ap, char *), 1); @@ -525,14 +535,14 @@ print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) fmt++; break; case 'R': - putchar('#'); + print_byte(h, '#'); fmt++; /* FALLTHROUGH */ default: print_encode(h, s, NULL, 1); break; } - putchar('"'); + print_byte(h, '"'); } /* Print out styles. */ @@ -591,7 +601,13 @@ print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) attr = "min-width"; break; case '?': - printf("%s: %s;", s, va_arg(ap, char *)); + print_word(h, s); + print_byte(h, ':'); + print_byte(h, ' '); + print_word(h, va_arg(ap, char *)); + print_byte(h, ';'); + if (*fmt != '\0') + print_byte(h, ' '); continue; default: abort(); @@ -601,22 +617,30 @@ print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) v = 1.0; else if (su->unit == SCALE_BU) v /= 24.0; - printf("%s: %.2f%s;", attr, v, roffscales[su->unit]); + print_word(h, attr); + print_byte(h, ':'); + print_byte(h, ' '); + (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v); + print_word(h, numbuf); + print_word(h, roffscales[su->unit]); + print_byte(h, ';'); + if (*fmt != '\0') + print_byte(h, ' '); } if (have_style) - putchar('"'); + print_byte(h, '"'); va_end(ap); /* Accommodate for "well-formed" singleton escaping. */ if (HTML_AUTOCLOSE & htmltags[tag].flags) - putchar('/'); + print_byte(h, '/'); - putchar('>'); + print_byte(h, '>'); if (tflags & HTML_NLBEGIN) - html_endline(h); + print_endline(h); else h->flags |= HTML_NOSPACE; @@ -649,11 +673,14 @@ print_ctag(struct html *h, struct tag *tag) if (tflags & HTML_NOINDENT) h->noindent--; if (tflags & HTML_NLEND) - html_endline(h); - html_indent(h); - printf("</%s>", htmltags[tag->tag].name); + print_endline(h); + print_indent(h); + print_byte(h, '<'); + print_byte(h, '/'); + print_word(h, htmltags[tag->tag].name); + print_byte(h, '>'); if (tflags & HTML_NLAFTER) - html_endline(h); + print_endline(h); h->tags.head = tag->next; free(tag); @@ -662,21 +689,20 @@ print_ctag(struct html *h, struct tag *tag) void print_gen_decls(struct html *h) { - - puts("<!DOCTYPE html>"); - h->flags |= HTML_NLDONE; + print_word(h, "<!DOCTYPE html>"); + print_endline(h); } void print_text(struct html *h, const char *word) { - if ((h->flags & (HTML_NLDONE | HTML_NOSPACE)) == 0) { + if (h->col && (h->flags & HTML_NOSPACE) == 0) { if ( ! (HTML_KEEP & h->flags)) { if (HTML_PREKEEP & h->flags) h->flags |= HTML_KEEP; - putchar(' '); + print_endword(h); } else - printf(" "); + print_word(h, " "); } assert(NULL == h->metaf); @@ -692,7 +718,7 @@ print_text(struct html *h, const char *word) print_otag(h, TAG_I, ""); break; default: - html_indent(h); + print_indent(h); break; } @@ -745,18 +771,85 @@ print_paragraph(struct html *h) print_tagq(h, t); } + +/*********************************************************************** + * Low level output functions. + * They implement line breaking using a short static buffer. + ***********************************************************************/ + +/* + * Buffer one HTML output byte. + * If the buffer is full, flush and deactivate it and start a new line. + * If the buffer is inactive, print directly. + */ +static void +print_byte(struct html *h, char c) +{ + if ((h->flags & HTML_BUFFER) == 0) { + putchar(c); + h->col++; + return; + } + + if (h->col + h->bufcol < sizeof(h->buf)) { + h->buf[h->bufcol++] = c; + return; + } + + putchar('\n'); + h->col = 0; + print_indent(h); + putchar(' '); + putchar(' '); + fwrite(h->buf, h->bufcol, 1, stdout); + putchar(c); + h->col = (h->indent + 1) * 2 + h->bufcol + 1; + h->bufcol = 0; + h->flags &= ~HTML_BUFFER; +} + /* * If something was printed on the current output line, end it. - * Not to be called right after html_indent(). + * Not to be called right after print_indent(). */ static void -html_endline(struct html *h) +print_endline(struct html *h) { - if (h->flags & HTML_NLDONE) + if (h->col == 0) return; + if (h->bufcol) { + putchar(' '); + fwrite(h->buf, h->bufcol, 1, stdout); + h->bufcol = 0; + } putchar('\n'); - h->flags |= HTML_NLDONE | HTML_NOSPACE; + h->col = 0; + h->flags |= HTML_NOSPACE; + h->flags &= ~HTML_BUFFER; +} + +/* + * Flush the HTML output buffer. + * If it is inactive, activate it. + */ +static void +print_endword(struct html *h) +{ + if (h->noindent) { + print_byte(h, ' '); + return; + } + + if ((h->flags & HTML_BUFFER) == 0) { + h->col++; + h->flags |= HTML_BUFFER; + } else if (h->bufcol) { + putchar(' '); + fwrite(h->buf, h->bufcol, 1, stdout); + h->col += h->bufcol + 1; + } + h->bufcol = 0; } /* @@ -766,17 +859,30 @@ html_endline(struct html *h) * but do not use print_otag() for producing it. */ static void -html_indent(struct html *h) +print_indent(struct html *h) { - int i; + size_t i; - if ((h->flags & HTML_NLDONE) == 0) + if (h->col) return; - if (h->noindent == 0) - for (i = 0; i < h->indent * 2; i++) + if (h->noindent == 0) { + h->col = h->indent * 2; + for (i = 0; i < h->col; i++) putchar(' '); - h->flags &= ~(HTML_NLDONE | HTML_NOSPACE); + } + h->flags &= ~HTML_NOSPACE; +} + +/* + * Print or buffer some characters + * depending on the current HTML output buffer state. + */ +static void +print_word(struct html *h, const char *cp) +{ + while (*cp != '\0') + print_byte(h, *cp++); } /* |