version 1.18, 2014/04/02 22:36:56 |
version 1.19, 2014/04/03 10:17:14 |
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#include <unistd.h> |
#include <unistd.h> |
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/* |
/* |
* In what section can we find Perl manuals? |
* In what section can we find Perl module manuals? |
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* Sometimes (Mac OS X) it's 3pm, sometimes (OpenBSD, etc.) 3p. |
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* XXX IF YOU CHANGE THIS, CHANGE POD2MDOC.1 AS WELL. |
*/ |
*/ |
#define PERL_SECTION "3p" |
#define PERL_SECTION "3p" |
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Line 170 formatescape(const char *buf, size_t *start, size_t en |
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Line 172 formatescape(const char *buf, size_t *start, size_t en |
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/* |
/* |
* Run some heuristics to intuit a link format. |
* Run some heuristics to intuit a link format. |
* I recognise L<foo::bar> as a Perl manpage, printing it in section 3p; |
* I set "start" to be the end of the sequence (last right-carrot) so |
* or a general UNIX foo(5) manpage. |
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* If I recognise one, I set "start" to be the end of the sequence so |
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* that the caller can safely just continue processing. |
* that the caller can safely just continue processing. |
* Otherwise, I don't touch "start". |
* If this is just an empty tag, I'll return 0. |
*/ |
*/ |
static int |
static int |
trylink(const char *buf, size_t *start, size_t end, size_t dsz) |
trylink(const char *buf, size_t *start, size_t end, size_t dsz) |
{ |
{ |
size_t sv, nstart, nend, i, j, textsz; |
size_t linkstart, realend, linkend, i, j, textsz; |
const char *text; |
const char *text; |
int hasdouble; |
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/* |
/* |
* Scan to the start of the terminus. |
* Scan to the start of the terminus. |
* This function is more or less replicated in the formatcode() |
* This function is more or less replicated in the formatcode() |
* for null or index formatting codes. |
* for null or index formatting codes. |
*/ |
*/ |
for (sv = nstart = *start; nstart < end; nstart++) { |
for (linkstart = realend = *start; realend < end; realend++) { |
if ('>' != buf[nstart]) |
if ('>' != buf[realend]) |
continue; |
continue; |
else if (dsz == 1) |
else if (dsz == 1) |
break; |
break; |
assert(nstart > 0); |
assert(realend > 0); |
if (' ' != buf[nstart - 1]) |
if (' ' != buf[realend - 1]) |
continue; |
continue; |
for (i = nstart, j = 0; i < end && j < dsz; j++) |
for (i = realend, j = 0; i < end && j < dsz; j++) |
if ('>' != buf[i++]) |
if ('>' != buf[i++]) |
break; |
break; |
if (dsz == j) |
if (dsz == j) |
break; |
break; |
} |
} |
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/* We don't care about stubs. */ |
/* Ignore stubs. */ |
if (nstart == end || nstart == *start) |
if (realend == end || realend == *start) |
return(0); |
return(0); |
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/* Set nend to the end of content. */ |
/* Set linkend to the end of content. */ |
nend = nstart; |
linkend = dsz > 1 ? realend - 1 : realend; |
if (dsz > 1) |
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nend--; |
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/* Re-scan to see if we have a title. */ |
/* Re-scan to see if we have a title or section. */ |
text = &buf[*start]; |
text = &buf[*start]; |
for (textsz = *start; textsz < nend; textsz++) |
for (textsz = *start; textsz < linkend; textsz++) |
if ('|' == buf[textsz]) |
if ('|' == buf[textsz] || '/' == buf[textsz]) |
break; |
break; |
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if (textsz < nend) { |
/* If we have a title, find the section. */ |
sv = textsz + 1; |
if (textsz < linkend && '|' == buf[textsz]) { |
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linkstart = textsz + 1; |
textsz = textsz - *start; |
textsz = textsz - *start; |
} else |
for (i = linkstart; i < linkend; i++) |
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if ('/' == buf[i]) |
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break; |
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if (i < linkend) |
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linkend = i; |
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} else { |
textsz = 0; |
textsz = 0; |
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if (textsz < linkend && '/' == buf[textsz]) |
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linkend = textsz; |
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} |
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/* Now see if we're a Perl manual. */ |
*start = realend; |
for (hasdouble = 0, i = sv + 1; i < end; i++) |
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if (':' == buf[i] && ':' == buf[i - 1]) { |
j = linkend - linkstart; |
hasdouble = 1; |
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if (0 == j) |
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return(0); |
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/* See if we qualify as being a link or not. */ |
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if ((j > 5 && 0 == memcmp("http:", &buf[linkstart], j)) || |
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(j > 6 && 0 == memcmp("https:", &buf[linkstart], j)) || |
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(j > 4 && 0 == memcmp("ftp:", &buf[linkstart], j)) || |
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(j > 5 && 0 == memcmp("sftp:", &buf[linkstart], j)) || |
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(j > 4 && 0 == memcmp("smb:", &buf[linkstart], j)) || |
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(j > 4 && 0 == memcmp("afs:", &buf[linkstart], j))) { |
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printf("Lk %.*s", (int)j, &buf[linkstart]); |
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return(1); |
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} |
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/* See if we qualify as a mailto. */ |
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if (j > 7 && 0 == memcmp("mailto:", &buf[linkstart], j)) { |
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printf("Mt %.*s", (int)j, &buf[linkstart]); |
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return(1); |
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} |
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/* See if we're a foo(5), foo(5x), or foo(5xx) manpage. */ |
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if ((j > 3 && ')' == buf[linkend - 1]) && |
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('(' == buf[linkend - 3])) { |
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printf("Xr %.*s %c", (int)(j - 3), |
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&buf[linkstart], buf[linkend - 2]); |
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return(1); |
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} else if ((j > 4 && ')' == buf[linkend - 1]) && |
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('(' == buf[linkend - 4])) { |
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printf("Xr %.*s %.*s", (int)(j - 4), |
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&buf[linkstart], 2, &buf[linkend - 3]); |
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return(1); |
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} else if ((j > 5 && ')' == buf[linkend - 1]) && |
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('(' == buf[linkend - 5])) { |
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printf("Xr %.*s %.*s", (int)(j - 5), |
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&buf[linkstart], 3, &buf[linkend - 4]); |
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return(1); |
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} |
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/* Last try: do we have a double-colon? */ |
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for (i = linkstart + 1; i < linkend; i++) |
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if (':' == buf[i] && ':' == buf[i - 1]) |
break; |
break; |
} |
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/* |
if (i < linkend) |
* Provide for some common invocations of the link primitive. |
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* First, allow us to link to other Perl manuals. |
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*/ |
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if (hasdouble) |
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printf("Xr %.*s " PERL_SECTION, |
printf("Xr %.*s " PERL_SECTION, |
(int)(nend - sv), &buf[sv]); |
(int)j, &buf[linkstart]); |
else if (nend - sv > 3 && isalnum(buf[sv]) && |
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')' == buf[nend - 1] && |
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isdigit((int)buf[nend - 2]) && |
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'(' == buf[nend - 3]) |
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printf("Xr %.*s %c", |
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(int)(nend - 3 - sv), |
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&buf[sv], buf[nend - 2]); |
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else |
else |
return(0); |
printf("Xr %.*s 1", (int)j, &buf[linkstart]); |
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*start = nstart; |
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return(1); |
return(1); |
} |
} |
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Line 457 formatcode(struct state *st, const char *buf, size_t * |
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Line 491 formatcode(struct state *st, const char *buf, size_t * |
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printf("Qo Li "); |
printf("Qo Li "); |
break; |
break; |
case (FMT_LINK): |
case (FMT_LINK): |
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/* Try to link; use "No" if it's empty. */ |
if ( ! trylink(buf, start, end, dsz)) |
if ( ! trylink(buf, start, end, dsz)) |
printf("No "); |
printf("No "); |
break; |
break; |