FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/help.c @ 820:03457a66d860
buzplayer: add basic support for PWT
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 30 May 2021 03:39:58 +0000 |
parents | 24cb10d508d7 |
children |
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/* * This module implements the fc-fsio help facility. */ #include <stdio.h> #include <ctype.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include "exitcodes.h" extern char help_file_pathname[]; show_help_topic(topic) char *topic; { FILE *f; char linebuf[256]; char *cp, *np; int flag; f = fopen(help_file_pathname, "r"); if (!f) { perror(help_file_pathname); return(ERROR_UNIX); } for (;;) { if (!fgets(linebuf, sizeof linebuf, f)) { fprintf(stderr, "Help topic \"%s\" not found\n", topic); fclose(f); return(ERROR_USAGE); } if (linebuf[0] != '=' || linebuf[1] != '=' || linebuf[2] != '=') continue; for (cp = linebuf + 3; isspace(*cp); cp++) ; for (np = cp; *cp && !isspace(*cp); cp++) ; if (*cp) *cp++ = '\0'; if (!strcmp(np, topic)) break; } for (flag = 0; fgets(linebuf, sizeof linebuf, f); ) { if (linebuf[0] == '=' && linebuf[1] == '=' && linebuf[2] == '=') { if (flag) break; else continue; } fputs(linebuf, stdout); flag = 1; } fclose(f); return(0); } cmd_help(argc, argv) char **argv; { switch (argc) { case 1: return show_help_topic("main"); case 2: return show_help_topic(argv[1]); default: fprintf(stderr, "internal error in cmd_help(): bad argc\n"); abort(); } }