Add code of conf-update 1.01.0

1 files changed, 173 insertions, 0 deletions

diff --git a/core.c b/core.c
new file mode 100644
index 0000000..de9cc64
--- /dev/null
+++ b/core.c
@@ -0,0 +1,173 @@
+#include "conf-update.h"
+
+char *get_real_filename(const char *update) {
+	char *file = (char *)calloc(strlen(update) + 1 - strlen("._cfg????_"), sizeof(char));
+	strncpy(file, update, strrchr(update, '/') - update + 1);
+	strcat(file, strrchr(update, '/') + strlen("._cfg????_") + 1);
+	
+	return file;
+}
+
+char *get_highest_update(char **index, char *update) {
+	// update is just any update of the real file we want to get the highest update for
+	char *real_file = get_real_filename(update);
+	char *my_real_file;
+	char *highest_update = update;
+	int i;
+	
+	for (i=0;!is_last_entry(index[i]);i++) {
+		if (is_valid_entry(index[i])) {
+			my_real_file = get_real_filename(index[i]);
+			if (!strcmp(my_real_file, real_file)) {
+				if (strcmp(index[i], highest_update) > 0) {
+					highest_update = index[i];
+				}
+			}
+			free(my_real_file);
+		}
+	}
+	
+	free(real_file);
+	
+	return highest_update;
+}
+
+bool is_last_entry(const char *entry) {
+	if (entry == LAST_ENTRY) {
+		return TRUE;
+	} else {
+		return FALSE;
+	}
+}
+
+bool is_valid_entry(const char *entry) {
+	if (entry == LAST_ENTRY || entry == SKIP_ENTRY) {
+		return FALSE;
+	} else {
+		return TRUE;
+	}
+}
+
+void merge(char *update, char **index) {
+	char *real_file = get_real_filename(update);
+	char *my_real_file;
+	int i;
+	
+	exit_error(!rename(update, real_file), update);
+	
+	for (i=0;!is_last_entry(index[i]);i++) {
+		if (is_valid_entry(index[i])) {
+			my_real_file = get_real_filename(index[i]);
+			if (!strcmp(my_real_file, real_file)) {
+				if (strcmp(update, index[i])) {
+					exit_error(!unlink(index[i]), index[i]);
+				}
+				free(index[i]);
+				index[i] = SKIP_ENTRY;
+			}
+			free(my_real_file);
+		}
+	}
+	
+	free(real_file);
+}
+
+void show_diff(char *update) {
+	extern struct configuration config;
+	char *realfile = get_real_filename(update);
+	char *esc_realfile = g_shell_quote(realfile);
+	char *esc_update = g_shell_quote(update);
+	char *cmd = (char *)calloc(strlen(config.diff_tool) + strlen(" % % | ") + strlen(esc_update) + strlen(esc_realfile) + strlen(config.pager) + 1, sizeof(char));
+	strcpy(cmd, config.diff_tool);
+	strcat(cmd, " ");
+	strcat(cmd, esc_realfile);
+	strcat(cmd, " ");
+	strcat(cmd, esc_update);
+	if (strcmp(config.pager, "")) {
+		strcat(cmd, " | ");
+		strcat(cmd, config.pager);
+	}
+	free(realfile);
+	g_free(esc_realfile);
+	g_free(esc_update);
+	system(cmd);
+	free(cmd);
+}
+
+void edit_update(char *update) {
+	extern struct configuration config;
+	char *esc_update = g_shell_quote(update);
+	char *cmd = calloc(strlen(config.edit_tool) + strlen("  ") + strlen(esc_update), sizeof(char));
+	
+	strcpy(cmd, config.edit_tool);
+	strcat(cmd, " ");
+	strcat(cmd, esc_update);
+	
+	system(cmd);
+	g_free(esc_update);
+	free(cmd);
+}
+
+char **merge_interactively(char *update, char **index) {
+	// customized versions are ._cfg????- with a minus instead of a underscore
+	// that way get_real_filename() works without modification
+	extern struct configuration config;
+	char *realfile = get_real_filename(update);
+	char *esc_realfile = g_shell_quote(realfile);
+	char *esc_update = g_shell_quote(update);
+	char *cmd = calloc(strlen("clear ; ") + strlen(config.merge_tool) + 2 * strlen(esc_update) + strlen(esc_realfile) + strlen(" % % %"), sizeof(char));
+	char *merged, *esc_merged;
+	char **new_index = index;
+	int retval, ct;
+	
+	// interactively merge an interactively merged file? naah.
+	if (*(strstr(update, "._cfg") + strlen("._cfg????")) == '_') {
+		merged = strdup(update);
+		*(strstr(merged, "._cfg") + strlen("._cfg????")) = '-';
+		esc_merged = g_shell_quote(merged);
+		strcpy(cmd, "clear ; ");
+		strcat(cmd, config.merge_tool);
+		strcat(cmd, " ");
+		strcat(cmd, esc_merged);
+		strcat(cmd, " ");
+		strcat(cmd, esc_realfile);
+		strcat(cmd, " ");
+		strcat(cmd, esc_update);
+		retval = WEXITSTATUS(system(cmd));
+
+		if (retval == 0 || retval == 1) {
+			for (ct=0;!is_last_entry(index[ct]);ct++) {}
+			new_index = realloc(index, (ct + 2) * sizeof(char *));
+			new_index[ct] = strdup(merged);
+			new_index[ct+1] = LAST_ENTRY;
+		} else {
+			// user aborted or error
+			unlink(merged);
+		}
+		free(merged);
+		g_free(esc_merged);
+	}
+	free(cmd);
+	free(realfile);
+	g_free(esc_realfile);
+	g_free(esc_update);
+	
+	return new_index;
+}
+void display_help() {
+	char *str = \
+	"Usage: " PROG_NAME " [options] [location1] [locationN] ...\n\n"
+	
+	"Options:\n"
+		"\t--help (-h)  Show this message\n"
+	"\n"
+	"Locations: absolute path to a directory to search through\n"
+	"           instead of CONFIG_PROTECT\n"
+	"\n"
+	"Shortcuts: \n"
+		"\tSelecting a directory will select all its updates\n";
+	
+	
+	fprintf(stderr, str);
+	exit(EXIT_SUCCESS);
+}