diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 68 |
1 files changed, 54 insertions, 14 deletions
@@ -88,7 +88,7 @@ static void mmsg(enum mandocerr, enum mandoclevel, const char *, int, int, const char *); static void parse(struct curparse *, int, const char *, enum mandoclevel *); -static enum mandoclevel passthrough(const char *, int); +static enum mandoclevel passthrough(const char *, int, int); static void spawn_pager(void); static int toptions(struct curparse *, char *); static void usage(enum argmode) __attribute__((noreturn)); @@ -119,6 +119,7 @@ main(int argc, char *argv[]) int fd; int show_usage; int use_pager; + int synopsis_only; int options; int c; @@ -155,6 +156,7 @@ main(int argc, char *argv[]) use_pager = 1; show_usage = 0; + synopsis_only = 0; outmode = OUTMODE_DEF; while (-1 != (c = getopt(argc, argv, @@ -174,6 +176,7 @@ main(int argc, char *argv[]) break; case 'h': (void)strlcat(curp.outopts, "synopsis,", BUFSIZ); + synopsis_only = 1; outmode = OUTMODE_ALL; break; case 'I': @@ -389,7 +392,8 @@ main(int argc, char *argv[]) chdir(paths.paths[resp->ipath]); parse(&curp, fd, resp->file, &rc); } else - rc = passthrough(resp->file, fd); + rc = passthrough(resp->file, fd, + synopsis_only); resp++; } else #endif @@ -579,27 +583,63 @@ parse(struct curparse *curp, int fd, const char *file, } static enum mandoclevel -passthrough(const char *file, int fd) +passthrough(const char *file, int fd, int synopsis_only) { - char buf[BUFSIZ]; + const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"; + const char synr[] = "SYNOPSIS"; + + FILE *stream; const char *syscall; - ssize_t nr, nw, off; + char *line; + size_t len, off; + ssize_t nw; + int print; + + if ((stream = fdopen(fd, "r")) == NULL) { + close(fd); + syscall = "fdopen"; + goto fail; + } - while ((nr = read(fd, buf, BUFSIZ)) != -1 && nr != 0) - for (off = 0; off < nr; off += nw) - if ((nw = write(STDOUT_FILENO, buf + off, - (size_t)(nr - off))) == -1 || nw == 0) { - close(fd); + print = 0; + while ((line = fgetln(stream, &len)) != NULL) { + if (synopsis_only) { + if (print) { + if ( ! isspace((unsigned char)*line)) + goto done; + while (len && + isspace((unsigned char)*line)) { + line++; + len--; + } + } else { + if ((len == sizeof(synb) && + ! strncmp(line, synb, len - 1)) || + (len == sizeof(synr) && + ! strncmp(line, synr, len - 1))) + print = 1; + continue; + } + } + for (off = 0; off < len; off += nw) + if ((nw = write(STDOUT_FILENO, line + off, + len - off)) == -1 || nw == 0) { + fclose(stream); syscall = "write"; goto fail; } + } - close(fd); + if (ferror(stream)) { + fclose(stream); + syscall = "fgetln"; + goto fail; + } - if (nr == 0) - return(MANDOCLEVEL_OK); +done: + fclose(stream); + return(MANDOCLEVEL_OK); - syscall = "read"; fail: fprintf(stderr, "%s: %s: SYSERR: %s: %s", progname, file, syscall, strerror(errno)); |