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man: support cat pages too (by Jason Curl <jcurlnews AT arcor.de>)

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function                                             old     new   delta
show_manpage                                           -     112    +112
run_pipe                                              89     102     +13
man_main                                             721     725      +4
This commit is contained in:
Denis Vlasenko 2008-07-04 21:58:00 +00:00
parent 9835d47acc
commit 4cbffc0f34
1 changed files with 30 additions and 13 deletions
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43
miscutils/man.c
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@ -23,7 +23,7 @@ echo ".pl \n(nlu+10"
*/
static int run_pipe(const char *unpacker, const char *pager, char *man_filename)
static int run_pipe(const char *unpacker, const char *pager, char *man_filename, int cat)
{
char *cmd;
@ -35,9 +35,10 @@ static int run_pipe(const char *unpacker, const char *pager, char *man_filename)
return 1;
}
/* "2>&1" added so that nroff errors are shown in pager too.
/* "2>&1" is added so that nroff errors are shown in pager too.
* Otherwise it may show just empty screen */
cmd = xasprintf("%s '%s' | gtbl | nroff -Tlatin1 -mandoc 2>&1 | %s",
cmd = xasprintf(cat ? "%s '%s' | %s"
: "%s '%s' | gtbl | nroff -Tlatin1 -mandoc 2>&1 | %s",
unpacker, man_filename, pager);
system(cmd);
free(cmd);
@ -45,22 +46,22 @@ static int run_pipe(const char *unpacker, const char *pager, char *man_filename)
}
/* man_filename is of the form "/dir/dir/dir/name.s.bz2" */
static int show_manpage(const char *pager, char *man_filename)
static int show_manpage(const char *pager, char *man_filename, int cat)
{
int len;
if (run_pipe("bunzip2 -c", pager, man_filename))
if (run_pipe("bunzip2 -c", pager, man_filename, cat))
return 1;
len = strlen(man_filename) - 1;
man_filename[len] = '\0'; /* ".bz2" -> ".gz" */
man_filename[len - 2] = 'g';
if (run_pipe("gunzip -c", pager, man_filename))
if (run_pipe("gunzip -c", pager, man_filename, cat))
return 1;
man_filename[len - 3] = '\0'; /* ".gz" -> "" */
if (run_pipe("cat", pager, man_filename))
if (run_pipe("cat", pager, man_filename, cat))
return 1;
return 0;
@ -145,14 +146,30 @@ int man_main(int argc ATTRIBUTE_UNUSED, char **argv)
do { /* for each section */
char *next_sect = strchrnul(cur_sect, ':');
int sect_len = next_sect - cur_sect;
char *man_filename;
int found_here;
char *man_filename = xasprintf("%.*s/man%.*s/%s.%.*s" ".bz2",
path_len, cur_path,
sect_len, cur_sect,
*argv,
sect_len, cur_sect);
found |= show_manpage(pager, man_filename);
/* Search for cat page first */
man_filename = xasprintf("%.*s/%s%.*s/%s.%.*s" ".bz2",
path_len, cur_path,
"cat",
sect_len, cur_sect,
*argv,
sect_len, cur_sect);
found_here = show_manpage(pager, man_filename, 1);
free(man_filename);
if (!found_here) {
man_filename = xasprintf("%.*s/%s%.*s/%s.%.*s" ".bz2",
path_len, cur_path,
"man",
sect_len, cur_sect,
*argv,
sect_len, cur_sect);
found_here = show_manpage(pager, man_filename, 0);
free(man_filename);
}
found |= found_here;
if (found && !(opt & OPT_a))
goto next_arg;
cur_sect = next_sect;