-/* $Id: html.c,v 1.51 2009/09/21 14:56:56 kristaps Exp $ */
+/* $Id: html.c,v 1.112 2010/09/04 20:18:53 kristaps Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* 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 <sys/types.h>
-#include <sys/queue.h>
#include <assert.h>
-#include <err.h>
+#include <ctype.h>
+#include <stdarg.h>
#include <stdio.h>
+#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include "mandoc.h"
+#include "out.h"
#include "chars.h"
#include "html.h"
-
-#define DOCTYPE "-//W3C//DTD HTML 4.01//EN"
-#define DTD "http://www.w3.org/TR/html4/strict.dtd"
+#include "main.h"
struct htmldata {
- char *name;
+ 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 */
+ {"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 */
};
-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",
"style",
"width",
"valign",
+ "target",
+ "id",
+ "summary",
};
-#ifdef __linux__
-extern int getsubopt(char **, char * const *, char **);
-#endif
-
-void *
-html_alloc(char *outopts)
+static void print_spec(struct html *, enum roffdeco,
+ 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_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 roffdeco);
+static void print_attr(struct html *,
+ const char *, const char *);
+static void *ml_alloc(char *, enum htmltype);
+
+
+static void *
+ml_alloc(char *outopts, enum htmltype type)
{
struct html *h;
- char *toks[3], *v;
+ const char *toks[4];
+ char *v;
toks[0] = "style";
- toks[1] = "base";
- toks[2] = NULL;
-
- if (NULL == (h = calloc(1, sizeof(struct html))))
- return(NULL);
-
- SLIST_INIT(&h->tags);
- SLIST_INIT(&h->ords);
-
- if (NULL == (h->symtab = chars_init(CHARS_HTML))) {
- free(h);
- return(NULL);
+ toks[1] = "man";
+ toks[2] = "includes";
+ toks[3] = NULL;
+
+ h = calloc(1, sizeof(struct html));
+ if (NULL == h) {
+ perror(NULL);
+ exit((int)MANDOCLEVEL_SYSERR);
}
+ h->type = type;
+ h->tags.head = NULL;
+ h->ords.head = NULL;
+ h->symtab = chars_init(CHARS_HTML);
+
while (outopts && *outopts)
- switch (getsubopt(&outopts, toks, &v)) {
+ switch (getsubopt(&outopts, UNCONST(toks), &v)) {
case (0):
h->style = v;
break;
case (1):
- h->base = v;
+ h->base_man = v;
+ break;
+ case (2):
+ h->base_includes = v;
break;
default:
break;
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)
h = (struct html *)p;
- while ( ! SLIST_EMPTY(&h->ords)) {
- ord = SLIST_FIRST(&h->ords);
- SLIST_REMOVE_HEAD(&h->ords, entry);
+ while ((ord = h->ords.head) != NULL) {
+ h->ords.head = ord->next;
free(ord);
}
- while ( ! SLIST_EMPTY(&h->tags)) {
- tag = SLIST_FIRST(&h->tags);
- SLIST_REMOVE_HEAD(&h->tags, entry);
+ while ((tag = h->tags.head) != NULL) {
+ h->tags.head = tag->next;
free(tag);
}
if (h->symtab)
chars_free(h->symtab);
+
free(h);
}
tag[3].val = "all";
print_otag(h, TAG_LINK, 4, tag);
}
-
- if (h->base) {
- tag[0].key = ATTR_HREF;
- tag[1].val = h->base;
- print_otag(h, TAG_BASE, 1, tag);
- }
}
static void
-print_spec(struct html *h, const char *p, int len)
+print_spec(struct html *h, enum roffdeco d, const char *p, size_t len)
{
+ int cp;
const char *rhs;
- int i;
size_t sz;
- rhs = chars_a2ascii(h->symtab, p, (size_t)len, &sz);
-
- if (NULL == rhs)
+ if ((cp = chars_spec2cp(h->symtab, p, len)) > 0) {
+ printf("&#%d;", cp);
return;
- for (i = 0; i < (int)sz; i++)
- putchar(rhs[i]);
+ } else if (-1 == cp && DECO_SSPECIAL == d) {
+ fwrite(p, 1, len, stdout);
+ return;
+ } else if (-1 == cp)
+ return;
+
+ if (NULL != (rhs = chars_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;
- int i;
size_t sz;
- rhs = chars_a2res(h->symtab, p, (size_t)len, &sz);
-
- if (NULL == rhs)
+ if ((cp = chars_res2cp(h->symtab, p, len)) > 0) {
+ printf("&#%d;", cp);
return;
- for (i = 0; i < (int)sz; i++)
- putchar(rhs[i]);
+ } else if (-1 == cp)
+ return;
+
+ if (NULL != (rhs = chars_res2str(h->symtab, p, len, &sz)))
+ fwrite(rhs, 1, sz, stdout);
}
-static void
-print_escape(struct html *h, const char **p)
+struct tag *
+print_ofont(struct html *h, enum htmlfont font)
{
- int j, type;
- const char *wp;
+ struct htmlpair tag;
- wp = *p;
- type = 1;
+ h->metal = h->metac;
+ h->metac = font;
- if (0 == *(++wp)) {
- *p = wp;
- return;
+ /* FIXME: DECO_ROMAN should just close out preexisting. */
+
+ if (h->metaf && h->tags.head == h->metaf)
+ print_tagq(h, h->metaf);
+
+ PAIR_CLASS_INIT(&tag, htmlfonts[font]);
+ h->metaf = print_otag(h, TAG_SPAN, 1, &tag);
+ return(h->metaf);
+}
+
+
+static void
+print_metaf(struct html *h, enum roffdeco deco)
+{
+ enum htmlfont font;
+
+ switch (deco) {
+ case (DECO_PREVIOUS):
+ font = h->metal;
+ break;
+ case (DECO_ITALIC):
+ font = HTMLFONT_ITALIC;
+ break;
+ case (DECO_BOLD):
+ font = HTMLFONT_BOLD;
+ break;
+ case (DECO_ROMAN):
+ font = HTMLFONT_NONE;
+ break;
+ default:
+ abort();
+ /* NOTREACHED */
}
- if ('(' == *wp) {
- wp++;
- if (0 == *wp || 0 == *(wp + 1)) {
- *p = 0 == *wp ? wp : wp + 1;
- return;
- }
+ (void)print_ofont(h, font);
+}
- print_spec(h, wp, 2);
- *p = ++wp;
- return;
- } else if ('*' == *wp) {
- if (0 == *(++wp)) {
- *p = wp;
- return;
- }
+static int
+print_encode(struct html *h, const char *p, int norecurse)
+{
+ size_t sz;
+ int len, nospace;
+ const char *seq;
+ enum roffdeco deco;
+ static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
- switch (*wp) {
- case ('('):
- wp++;
- if (0 == *wp || 0 == *(wp + 1)) {
- *p = 0 == *wp ? wp : wp + 1;
- return;
- }
+ nospace = 0;
- print_res(h, wp, 2);
- *p = ++wp;
- return;
- case ('['):
- type = 0;
+ for (; *p; p++) {
+ sz = strcspn(p, rejs);
+
+ fwrite(p, 1, sz, stdout);
+ p += /* LINTED */
+ sz;
+
+ if ('<' == *p) {
+ printf("<");
+ continue;
+ } else if ('>' == *p) {
+ printf(">");
+ continue;
+ } else if ('&' == *p) {
+ printf("&");
+ continue;
+ } else if (ASCII_HYPH == *p) {
+ /*
+ * Note: "soft hyphens" aren't graphically
+ * displayed when not breaking the text; we want
+ * them to be displayed.
+ */
+ /*printf("­");*/
+ putchar('-');
+ continue;
+ } else if ('\0' == *p)
break;
- default:
- print_res(h, wp, 1);
- *p = wp;
- return;
- }
-
- } else if ('f' == *wp) {
- if (0 == *(++wp)) {
- *p = wp;
- return;
- }
- switch (*wp) {
- case ('B'):
- /* TODO */
+ seq = ++p;
+ len = a2roffdeco(&deco, &seq, &sz);
+
+ switch (deco) {
+ case (DECO_RESERVED):
+ print_res(h, seq, sz);
break;
- case ('I'):
- /* TODO */
+ case (DECO_SSPECIAL):
+ /* FALLTHROUGH */
+ case (DECO_SPECIAL):
+ print_spec(h, deco, seq, sz);
break;
- case ('P'):
+ case (DECO_PREVIOUS):
/* FALLTHROUGH */
- case ('R'):
- /* TODO */
+ case (DECO_BOLD):
+ /* FALLTHROUGH */
+ case (DECO_ITALIC):
+ /* FALLTHROUGH */
+ case (DECO_ROMAN):
+ if (norecurse)
+ break;
+ print_metaf(h, deco);
break;
default:
break;
}
- *p = wp;
- return;
-
- } else if ('[' != *wp) {
- print_spec(h, wp, 1);
- *p = wp;
- return;
- }
-
- wp++;
- for (j = 0; *wp && ']' != *wp; wp++, j++)
- /* Loop... */ ;
+ p += len - 1;
- if (0 == *wp) {
- *p = wp;
- return;
+ if (DECO_NOSPACE == deco && '\0' == *(p + 1))
+ nospace = 1;
}
- if (type)
- print_spec(h, wp - j, j);
- else
- print_res(h, wp - j, j);
-
- *p = wp;
+ return(nospace);
}
static void
-print_encode(struct html *h, const char *p)
+print_attr(struct html *h, const char *key, const char *val)
{
-
- for (; *p; p++) {
- if ('\\' == *p) {
- print_escape(h, &p);
- continue;
- }
- switch (*p) {
- case ('<'):
- printf("<");
- break;
- case ('>'):
- printf(">");
- break;
- case ('&'):
- printf("&");
- break;
- default:
- putchar(*p);
- break;
- }
- }
+ printf(" %s=\"", key);
+ (void)print_encode(h, val, 1);
+ putchar('\"');
}
int i;
struct tag *t;
+ /* Push this tags onto the stack of open scopes. */
+
if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
- if (NULL == (t = malloc(sizeof(struct tag))))
- err(EXIT_FAILURE, "malloc");
+ t = malloc(sizeof(struct tag));
+ if (NULL == t) {
+ perror(NULL);
+ exit((int)MANDOCLEVEL_SYSERR);
+ }
t->tag = tag;
- SLIST_INSERT_HEAD(&h->tags, t, entry);
+ t->next = h->tags.head;
+ h->tags.head = t;
} else
t = NULL;
if ( ! (HTML_NOSPACE & h->flags))
- if ( ! (HTML_CLRLINE & htmltags[tag].flags))
- printf(" ");
+ 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);
- printf("\"");
+ 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");
}
- printf(">");
- h->flags |= HTML_NOSPACE;
- if (HTML_CLRLINE & htmltags[tag].flags)
- h->flags |= HTML_NEWLINE;
- else
- h->flags &= ~HTML_NEWLINE;
+ /* Accomodate 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;
return(t);
}
-/* ARGSUSED */
static void
print_ctag(struct html *h, enum htmltag tag)
{
printf("</%s>", htmltags[tag].name);
- if (HTML_CLRLINE & htmltags[tag].flags)
+ if (HTML_CLRLINE & htmltags[tag].flags) {
h->flags |= HTML_NOSPACE;
- if (HTML_CLRLINE & htmltags[tag].flags)
- h->flags |= HTML_NEWLINE;
- else
- h->flags &= ~HTML_NEWLINE;
+ putchar('\n');
+ }
}
-/* ARGSUSED */
void
-print_gen_doctype(struct html *h)
+print_gen_decls(struct html *h)
{
-
- printf("<!DOCTYPE HTML PUBLIC \"%s\" \"%s\">", DOCTYPE, DTD);
+
+ print_xmltype(h);
+ print_doctype(h);
+}
+
+
+static void
+print_xmltype(struct html *h)
+{
+
+ if (HTML_XHTML_1_0_STRICT == h->type)
+ printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
+}
+
+
+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("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\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) {
+ if (word[0] && '\0' == word[1])
+ switch (word[0]) {
case('.'):
/* FALLTHROUGH */
case(','):
case(')'):
/* FALLTHROUGH */
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;
- h->flags &= ~HTML_NEWLINE;
-
- if (p)
- print_encode(h, p);
+ 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 (*p && 0 == *(p + 1))
- switch (*p) {
+ assert(word);
+ if ( ! print_encode(h, word, 0))
+ if ( ! (h->flags & HTML_NONOSPACE))
+ h->flags &= ~HTML_NOSPACE;
+
+ /*
+ * Note that we don't process the pipe: the parser sees it as
+ * punctuation, but we don't in terms of typography.
+ */
+ if (word[0] && '\0' == word[1])
+ switch (word[0]) {
case('('):
/* FALLTHROUGH */
case('['):
- /* FALLTHROUGH */
- case('{'):
h->flags |= HTML_NOSPACE;
break;
default:
{
struct tag *tag;
- while ( ! SLIST_EMPTY(&h->tags)) {
- tag = SLIST_FIRST(&h->tags);
+ while ((tag = h->tags.head) != NULL) {
+ if (tag == h->metaf)
+ h->metaf = NULL;
print_ctag(h, tag->tag);
- SLIST_REMOVE_HEAD(&h->tags, entry);
+ h->tags.head = tag->next;
free(tag);
if (until && tag == until)
return;
{
struct tag *tag;
- while ( ! SLIST_EMPTY(&h->tags)) {
- tag = SLIST_FIRST(&h->tags);
+ while ((tag = h->tags.head) != NULL) {
if (suntil && tag == suntil)
return;
+ if (tag == h->metaf)
+ h->metaf = NULL;
print_ctag(h, tag->tag);
- SLIST_REMOVE_HEAD(&h->tags, entry);
+ 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;
+ }
+
+ /*
+ * 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);
+}
+
+
+void
+html_idcat(char *dst, const char *src, int sz)
+{
+ int ssz;
+
+ assert(sz);
+
+ /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
+
+ 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;
+ }
+}
git.ckatri.com / mandoc.git / blobdiff