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man: code shrink
function old new delta man_main 725 765 +40 show_manpage 112 - -112 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/0 up/down: 40/-112) Total: -72 bytes
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@ -23,6 +23,10 @@ echo ".pl \n(nlu+10"
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*/
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*/
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/* Trick gcc to reuse "cat" string. */
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#define STR_catNULmanNUL "cat\0man"
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#define STR_cat "cat\0man"
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static int run_pipe(const char *unpacker, const char *pager, char *man_filename, int cat)
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static int run_pipe(const char *unpacker, const char *pager, char *man_filename, int cat)
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{
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{
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char *cmd;
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char *cmd;
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@ -61,7 +65,7 @@ static int show_manpage(const char *pager, char *man_filename, int cat)
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return 1;
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return 1;
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man_filename[len - 3] = '\0'; /* ".gz" -> "" */
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man_filename[len - 3] = '\0'; /* ".gz" -> "" */
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if (run_pipe("cat", pager, man_filename, cat))
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if (run_pipe(STR_cat, pager, man_filename, cat))
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return 1;
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return 1;
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return 0;
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return 0;
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@ -147,28 +151,22 @@ int man_main(int argc ATTRIBUTE_UNUSED, char **argv)
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char *next_sect = strchrnul(cur_sect, ':');
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char *next_sect = strchrnul(cur_sect, ':');
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int sect_len = next_sect - cur_sect;
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int sect_len = next_sect - cur_sect;
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char *man_filename;
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char *man_filename;
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int found_here;
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int cat0man1 = 0;
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/* Search for cat page first */
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/* Search for cat, then man page */
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while (cat0man1 < 2) {
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int found_here;
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man_filename = xasprintf("%.*s/%s%.*s/%s.%.*s" ".bz2",
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man_filename = xasprintf("%.*s/%s%.*s/%s.%.*s" ".bz2",
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path_len, cur_path,
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path_len, cur_path,
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"cat",
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STR_catNULmanNUL + cat0man1 * 4,
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sect_len, cur_sect,
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sect_len, cur_sect,
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*argv,
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*argv,
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sect_len, cur_sect);
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sect_len, cur_sect);
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found_here = show_manpage(pager, man_filename, 1);
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found_here = show_manpage(pager, man_filename, cat0man1);
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free(man_filename);
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found |= found_here;
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if (!found_here) {
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cat0man1 += found_here + 1;
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man_filename = xasprintf("%.*s/%s%.*s/%s.%.*s" ".bz2",
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path_len, cur_path,
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"man",
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sect_len, cur_sect,
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*argv,
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sect_len, cur_sect);
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found_here = show_manpage(pager, man_filename, 0);
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free(man_filename);
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free(man_filename);
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}
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}
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found |= found_here;
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if (found && !(opt & OPT_a))
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if (found && !(opt & OPT_a))
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goto next_arg;
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goto next_arg;
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