+++ /dev/null
-/*
- * This file is part of DisOrder.
- * Copyright (C) 2004-2008 Richard Kettlewell
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- */
-/** @file server/options.c
- * @brief CGI options
- *
- * Options represent an additional configuration system private to the
- * CGI program.
- */
-
-#include "disorder-cgi.h"
-
-struct column {
- int ncolumns;
- char **columns;
-};
-
-struct read_options_state {
- const char *name;
- int line;
-};
-
-static hash *labels;
-static hash *columns;
-
-static void option__readfile(const char *name);
-
-static void option__label(int attribute((unused)) nvec,
- char **vec) {
- option_set(vec[0], vec[1]);
-}
-
-static void option__include(int attribute((unused)) nvec,
- char **vec) {
- option__readfile(vec[0]);
-}
-
-static void option__columns(int nvec,
- char **vec) {
- struct column c;
-
- c.ncolumns = nvec - 1;
- c.columns = &vec[1];
- hash_add(columns, vec[0], &c, HASH_INSERT_OR_REPLACE);
-}
-
-static struct option {
- const char *name;
- int minargs, maxargs;
- void (*handler)(int nvec, char **vec);
-} options[] = {
- { "columns", 1, INT_MAX, option__columns },
- { "include", 1, 1, option__include },
- { "label", 2, 2, option__label },
-};
-
-static void option__split_error(const char *msg,
- void *u) {
- struct read_options_state *cs = u;
-
- error(0, "%s:%d: %s", cs->name, cs->line, msg);
-}
-
-static void option__readfile(const char *name) {
- int n, i;
- FILE *fp;
- char **vec, *buffer;
- struct read_options_state cs;
-
- if(!(cs.name = mx_find(name, 1/*report*/)))
- return;
- if(!(fp = fopen(cs.name, "r")))
- fatal(errno, "error opening %s", cs.name);
- cs.line = 0;
- while(!inputline(cs.name, fp, &buffer, '\n')) {
- ++cs.line;
- if(!(vec = split(buffer, &n, SPLIT_COMMENTS|SPLIT_QUOTES,
- option__split_error, &cs)))
- continue;
- if(!n)
- continue;
- if((i = TABLE_FIND(options, name, vec[0])) == -1) {
- error(0, "%s:%d: unknown option '%s'", cs.name, cs.line, vec[0]);
- continue;
- }
- ++vec;
- --n;
- if(n < options[i].minargs) {
- error(0, "%s:%d: too few arguments to '%s'", cs.name, cs.line, vec[-1]);
- continue;
- }
- if(n > options[i].maxargs) {
- error(0, "%s:%d: too many arguments to '%s'", cs.name, cs.line, vec[-1]);
- continue;
- }
- options[i].handler(n, vec);
- }
- fclose(fp);
-}
-
-static void option__init(void) {
- static int have_read_options;
-
- if(!have_read_options) {
- have_read_options = 1;
- labels = hash_new(sizeof (char *));
- columns = hash_new(sizeof (struct column));
- option__readfile("options");
- }
-}
-
-/** @brief Set an option
- * @param name Option name
- * @param value Option value
- *
- * If the option was already set its value is replaced.
- *
- * @p name and @p value are copied.
- */
-void option_set(const char *name, const char *value) {
- char *v = xstrdup(value);
-
- option__init();
- hash_add(labels, name, &v, HASH_INSERT_OR_REPLACE);
-}
-
-/** @brief Get a label
- * @param key Name of label
- * @return Value of label (never NULL)
- *
- * If label images.X isn't found then the return value is
- * <url.static>X.png, allowing url.static to be used to provide a base
- * for all images with per-image overrides.
- *
- * Otherwise undefined labels expand to their last (dot-separated)
- * component.
- */
-const char *option_label(const char *key) {
- const char *label;
- char **lptr;
-
- option__init();
- lptr = hash_find(labels, key);
- if(lptr)
- return *lptr;
- /* No label found */
- if(!strncmp(key, "images.", 7)) {
- static const char *url_static;
- /* images.X defaults to <url.static>X.png */
-
- if(!url_static)
- url_static = option_label("url.static");
- byte_xasprintf((char **)&label, "%s%s.png", url_static, key + 7);
- } else if((label = strrchr(key, '.')))
- /* X.Y defaults to Y */
- ++label;
- else
- /* otherwise default to label name */
- label = key;
- return label;
-}
-
-/** @brief Test whether a label exists
- * @param key Name of label
- * @return 1 if label exists, otherwise 0
- *
- * Labels that don't exist still have an expansion (per option_label()
- * documentation), and possibly not even a placeholder one.
- */
-int option_label_exists(const char *key) {
- option__init();
- return !!hash_find(labels, key);
-}
-
-/** @brief Return a column list
- * @param name Context (playing/recent/etc)
- * @param ncolumns Where to store column count or NULL
- * @return Pointer to column list
- */
-char **option_columns(const char *name, int *ncolumns) {
- struct column *c;
-
- option__init();
- c = hash_find(columns, name);
- if(c) {
- if(ncolumns)
- *ncolumns = c->ncolumns;
- return c->columns;
- } else {
- if(ncolumns)
- *ncolumns = 0;
- return 0;
- }
-}
-
-/*
-Local Variables:
-c-basic-offset:2
-comment-column:40
-End:
-*/
~mdw / disorder / blobdiff