Initial revision

svn-id: r4785

1 files changed, 386 insertions, 0 deletions

diff --git a/common/config-file.cpp b/common/config-file.cpp
new file mode 100644
index 0000000000..b56630f5c5
--- /dev/null
+++ b/common/config-file.cpp
@@ -0,0 +1,386 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2001  Ludvig Strigeus
+ * Copyright (C) 2001/2002 The ScummVM project
+ *
+ * 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.
+ *
+ * $Header$
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "stdafx.h"
+#include "config-file.h"
+#include "scumm.h"
+
+#define MAXLINELEN 256
+
+#define xfree(p) {if (p) free(p);}
+
+
+static char *ltrim(char *t)
+{
+	for (; *t && (*t == ' '); t++);
+	return t;
+}
+
+static char *rtrim(char *t)
+{
+	int l;
+
+	for (l = strlen(t) - 1; l; l--) {
+		if (t[l] == ' ') {
+			*t = 0;
+		} else {
+			return t;
+		}
+	}
+	return t;
+}
+
+class hashconfig {
+public:
+	hashconfig (const char *);
+	 ~hashconfig ();
+	bool is_domain(const char *) const;
+	const char *get(const char *) const;
+	const char *set(const char *, const char *);
+	const char *getdomain() const;
+	void flush(FILE *) const;
+	void rename(const char *);
+	void merge(const hashconfig *);
+private:
+	char *domain;
+	char **keys, **values;
+	int nkeys;
+};
+
+hashconfig::hashconfig (const char *dom):domain(dom ? strdup(dom) : 0),
+keys(0), values(0), nkeys(0)
+{
+}
+
+hashconfig::~hashconfig () {
+	xfree(domain);
+}
+
+bool hashconfig::is_domain(const char *d) const
+{
+	return d && domain && !strcmp(d, domain);
+}
+
+const char *hashconfig::get(const char *key) const
+{
+	int i;
+
+	for (i = 0; i < nkeys; i++) {
+		if (!strcmp(key, keys[i])) {
+			return values[i];
+		}
+	}
+
+	return 0;
+}
+
+const char *hashconfig::set(const char *key, const char *value)
+{
+	int i;
+
+	for (i = 0; i < nkeys; i++) {
+		if (!strcmp(key, keys[i])) {
+			xfree(values[i]);
+			return values[i] = value ? strdup(value) : 0;
+		}
+	}
+
+	nkeys++;
+	keys = (char **)realloc(keys, nkeys * sizeof(char *));
+	values = (char **)realloc(values, nkeys * sizeof(char *));
+	keys[nkeys - 1] = strdup(key);
+	return values[nkeys - 1] = value ? strdup(value) : 0;
+}
+
+const char *hashconfig::getdomain() const
+{
+	return domain;
+}
+
+void hashconfig::flush(FILE *cfg_file) const
+{
+	int i;
+
+	if (!domain)
+		return;
+
+	fprintf(cfg_file, "[%s]\n", domain);
+
+	for (i = 0; i < nkeys; i++) {
+		if (values[i]) {
+			fprintf(cfg_file, "%s=%s\n", keys[i], values[i]);
+		}
+	}
+	fprintf(cfg_file, "\n");
+}
+
+void hashconfig::rename(const char *d)
+{
+	xfree(domain);
+	domain = d ? strdup(d) : 0;
+}
+
+void hashconfig::merge(const hashconfig *h)
+{
+	int i;
+
+	for (i = 0; i < h->nkeys; i++) {
+		set(h->keys[i], h->values[i]);
+	}
+}
+
+// The config-class itself.
+
+Config::Config (const char *cfg, const char *d)
+: filename(strdup(cfg)), domain(d ? strdup(d) : 0), hash(0), ndomains(0), willwrite(false)
+{
+	FILE *cfg_file;
+	char t[MAXLINELEN];
+
+	if (!(cfg_file = fopen(cfg, "r"))) {
+		debug(1, "Unable to open configuration file: %s.\n", filename);
+	} else {
+		while (!feof(cfg_file)) {
+			if (!fgets(t, MAXLINELEN, cfg_file))
+				continue;
+			if (t[0] != '#') {
+				if (t[0] == '[') {
+					// It's a new domain which begins here.
+					char *p = strchr(t, ']');
+					if (!p) {
+						debug(1, "Config file buggy: no ] at the end of the domain name.\n");
+					} else {
+						*p = 0;
+						set_domain(t + 1);
+					}
+				} else {
+					// It's a new key in the domain.
+					if (!domain) {
+						debug(1, "Config file buggy: we have a key without a domain first.\n");
+					}
+					char *p = strchr(t, '\n');
+					if (p)
+						*p = 0;
+					p = strchr(t, '\r');
+					if (p)
+						*p = 0;
+
+					if (!(p = strchr(t, '='))) {
+						if (strlen(t))
+							debug(1, "Config file buggy: there is junk: %s\n", t);
+					} else {
+						char *key, *value;
+						*p = 0;
+						key = ltrim(rtrim(t));
+						value = ltrim(p + 1);
+						set(key, value);
+					}
+				}
+			}
+		}
+		set_domain(d);
+		fclose(cfg_file);
+	}
+}
+
+Config::~Config () {
+	int i;
+
+	xfree(filename);
+	xfree(domain);
+
+	for (i = 0; i < ndomains; i++) {
+		delete hash[i];
+	}
+	xfree(hash);
+}
+
+const char *Config::get(const char *key, const char *d) const
+{
+	int i;
+
+	if (!d)
+		d = domain;
+
+	for (i = 0; i < ndomains; i++) {
+		if (hash[i]->is_domain(d)) {
+			return hash[i]->get(key);
+		}
+	}
+
+	return 0;
+}
+
+const int Config::getInt(const char *key, int def, const char *d) const
+{
+	const char *value = get(key, d);
+	
+	if (value)
+		return atoi(value);
+	return def;
+}
+
+const bool Config::getBool(const char *key, bool def, const char *d) const
+{
+	const char *value = get(key, d);
+	
+	if (value)
+		return !scumm_stricmp(value, "true");
+	return def;
+}
+
+const char *Config::set(const char *key, const char *value, const char *d)
+{
+	int i;
+
+	if (!d)
+		d = domain;
+
+	for (i = 0; i < ndomains; i++) {
+		if (hash[i]->is_domain(d)) {
+			return hash[i]->set(key, value);
+		}
+	}
+
+	ndomains++;
+	hash = (hashconfig **)realloc(hash, ndomains * sizeof(hashconfig *));
+	hash[ndomains - 1] = new hashconfig (d);
+
+	return hash[ndomains - 1]->set(key, value);
+}
+
+const char *Config::set(const char *key, int value_i, const char *d)
+{
+	char value[MAXLINELEN];
+	sprintf(value, "%i", value_i);
+	return set(key, value, d);
+}
+
+const char *Config::set(const char *key, bool value_b, const char *d)
+{
+	const char *value = value_b ? "true" : "false";
+	return set(key, value, d);
+}
+
+void Config::set_domain(const char *d)
+{
+	int i;
+	xfree(domain);
+	domain = d ? strdup(d) : 0;
+
+	for (i = 0; i < ndomains; i++) {
+		if (hash[i]->is_domain(domain))
+			return;
+	}
+	ndomains++;
+	hash = (hashconfig **)realloc(hash, ndomains * sizeof(hashconfig *));
+	hash[ndomains - 1] = new hashconfig (domain);
+}
+
+void Config::flush() const
+{
+	FILE *cfg_file;
+	int i;
+
+	if (!willwrite)
+		return;
+
+	if (!(cfg_file = fopen(filename, "w"))) {
+		debug(1, "Unable to write configuration file: %s.\n", filename);
+	} else {
+		for (i = 0; i < ndomains; i++) {
+			hash[i]->flush(cfg_file);
+		}
+		fclose(cfg_file);
+	}
+}
+
+void Config::rename_domain(const char *d)
+{
+	int i, index = -1;
+
+	for (i = 0; i < ndomains; i++) {
+		if (hash[i]->is_domain(d)) {
+			index = i;
+		}
+	}
+
+	for (i = 0; i < ndomains; i++) {
+		if (hash[i]->is_domain(domain)) {
+			if (index >= 0) {
+				hash[i]->merge(hash[index]);
+				hash[index]->rename(0);
+				rename_domain(d);
+			} else {
+				hash[i]->rename(d);
+				set_domain(d);
+			}
+		}
+	}
+}
+
+void Config::delete_domain(const char *d)
+{
+	int i;
+
+	for (i = 0; i < ndomains; i++) {
+		if (hash[i]->is_domain(d)) {
+			hash[i]->rename(0);
+		}
+	}
+}
+
+void Config::change_filename(const char *f)
+{
+	xfree(filename);
+	filename = f ? strdup(f) : 0;
+}
+
+void Config::merge_config(const Config *c)
+{
+	int i, j;
+	bool found;
+
+	for (i = 0; i < c->ndomains; i++) {
+		found = false;
+		for (j = 0; j < ndomains; j++) {
+			if (hash[j]->is_domain(c->hash[i]->getdomain())) {
+				hash[j]->merge(c->hash[i]);
+				found = true;
+				break;
+			}
+		}
+		if (!found) {
+			ndomains++;
+			hash = (hashconfig **)realloc(hash, ndomains * sizeof(hashconfig *));
+			hash[ndomains - 1] = new hashconfig (domain);
+			hash[ndomains - 1]->merge(c->hash[i]);
+		}
+	}
+}
+
+void Config::set_writing(bool w)
+{
+	willwrite = w;
+}