overwrite_file output method

diff --git a/src/conky.c b/src/conky.c
index 0027b3f..a2b9be6 100644 (file)
--- a/src/conky.c
+++ b/src/conky.c
@@ -129,6 +129,7 @@ int top_cpu, top_mem, top_time;
 #define TO_X 1
 #define TO_STDOUT 2
 #define TO_STDERR 4
+#define OVERWRITE_FILE 8
 static int output_methods;
 static volatile int g_signal_pending;
 /* Update interval */
@@ -416,6 +417,9 @@ static int fork_to_background;
 
 static int cpu_avg_samples, net_avg_samples;
 
+/* filenames for output */
+char *overwrite_file = NULL; FILE *overwrite_fpointer = NULL;
+
 #ifdef X11
 
 static int show_graph_scale;
@@ -5845,6 +5849,9 @@ static void draw_string(const char *s)
                fprintf(stderr, "%s\n", s);
                fflush(stderr); /* output immediately, don't buffer */
        }
+       if ((output_methods & OVERWRITE_FILE) && draw_mode == FG && overwrite_fpointer != NULL) {
+               fprintf(overwrite_fpointer, "%s\n", s);
+       }
        memset(tmpstring1, 0, text_buffer_size);
        memset(tmpstring2, 0, text_buffer_size);
        strncpy(tmpstring1, s, text_buffer_size - 1);
@@ -6425,6 +6432,10 @@ static void draw_text(void)
 
 static void draw_stuff(void)
 {
+       if(overwrite_file != NULL) {
+               overwrite_fpointer = fopen(overwrite_file, "w");
+               if(overwrite_fpointer == NULL) ERR("Can't overwrite '%s' anymore", overwrite_file);
+       }
 #ifdef X11
        selected_font = 0;
        if (draw_shades && !draw_outline) {
@@ -6472,6 +6483,7 @@ static void draw_stuff(void)
        }
 #endif
 #endif /* X11 */
+       if(overwrite_fpointer != NULL) fclose(overwrite_fpointer);
 }
 
 #ifdef X11
@@ -6820,6 +6832,7 @@ static void main_loop(void)
                                XFixesDestroyRegion(display, part);
 #endif /* HAVE_XDAMAGE */
 #endif /* X11 */
+                               if(overwrite_file != NULL) free(overwrite_file);
                                return; /* return from main_loop */
                                /* break; */
                        default:
@@ -7145,6 +7158,15 @@ static void set_default_configurations(void)
 #endif
 }
 
+//returns 1 if you can overwrite or create the file at 'path'
+static _Bool overwrite_works(const char *path)
+{
+       FILE *filepointer = fopen(path, "w");
+       if(filepointer == NULL) return 0;
+       fclose(filepointer);
+       return 1;
+}
+
 static void load_config_file(const char *f)
 {
 #define CONF_ERR ERR("%s: %d: config file error", f, line)
@@ -7484,6 +7506,13 @@ static void load_config_file(const char *f)
                CONF("out_to_stderr") {
                        if(string_to_bool(value)) output_methods |= TO_STDERR;
                }
+               CONF("overwrite_file") {
+                       if(overwrite_file != NULL) free(overwrite_file);
+                       if(overwrite_works(value) == 1) {
+                               overwrite_file = strdup(value);
+                               output_methods |= OVERWRITE_FILE;
+                       }else ERR("overwrite_file won't be able to create/overwrite '%s'", value);
+               }
                CONF("use_spacer") {
                        if (value) {
                                if (strcasecmp(value, "left") == EQUAL) {