--- /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
+ */
+
+#include <config.h>
+#include "types.h"
+
+#include <stdio.h>
+
+#include "mem.h"
+#include "hash.h"
+#include "macros.h"
+#include "options.h"
+#include "split.h"
+#include "table.h"
+
+struct column {
+ int ncolumns;
+ char **columns;
+};
+
+static hash *labels;
+static hash *columns;
+
+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;
+ int fd;
+ FILE *fp;
+ char **vec, *buffer;
+ struct read_options_state cs;
+ const char *path;
+
+ if(!(cs.name = mx_find(name)))
+ 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, struct option, 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;
+
+ option__init();
+ if(!(label = *(char **)hash_find(labels, key))) {
+ /* 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