wmix: rewrote parser of config file to report problems to user
The original parser would not say anything if the user had misspelled something in the file which can be annoying. Now the parser will report warnings for everything not understood with a message trying to be more helpful to debug and fix. Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
This commit is contained in:
Christophe CURIS
Carlos R. Mafra
parent
5b46b380e6
commit
546bc1e49b
118
wmix/config.c
118
wmix/config.c
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@ -23,6 +23,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <getopt.h>
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#include <sys/soundcard.h>
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@ -149,8 +150,8 @@ void config_read(void)
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const char *filename;
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char buffer_fname[512];
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FILE *fp;
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int line;
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char buf[512];
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char *ptr;
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if (config.file != NULL) {
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filename = config.file;
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@ -179,43 +180,98 @@ void config_read(void)
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if (config.verbose)
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printf("Using configuration file: %s\n", filename);
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line = 0;
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while (fgets(buf, 512, fp)) {
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if ((ptr = strstr(buf, "mousewheel="))) {
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ptr += 11;
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config.mousewheel = atoi(ptr);
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char *ptr;
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char *keyword;
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char *value;
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line++;
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ptr = buf;
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while (isspace(*ptr))
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ptr++;
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if ((*ptr == '\0') || (*ptr == '#'))
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continue;
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/* Isolate the keyword */
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keyword = ptr;
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if (*ptr == '=') {
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fprintf(stderr, "wmix:warning: syntax error at line %d in \"%s\", no keyword before '='\n",
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line, filename);
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continue;
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}
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if ((ptr = strstr(buf, "scrolltext="))) {
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ptr += 11;
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config.scrolltext = atoi(ptr);
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value = NULL;
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while (*ptr) {
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if (*ptr == '=') {
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value = ptr + 1;
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break;
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}
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if ((ptr = strstr(buf, "osd="))) {
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ptr += 4;
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config.osd = atoi(ptr);
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if (*ptr == '#')
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break;
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ptr++;
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}
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if ((ptr = strstr(buf, "osdcolor="))) {
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char *end;
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ptr += 9;
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end = strchr(ptr, '\n');
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ptr[end - ptr] = '\0';
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if (value == NULL) {
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fprintf(stderr, "wmix:warning: syntax error at line %d in \"%s\", missing '='\n",
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line, filename);
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continue;
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}
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while (isspace(ptr[-1]))
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ptr--;
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*ptr = '\0';
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/* Isolate the value */
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while (isspace(*value))
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value++;
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ptr = value;
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while (*ptr) {
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if (*ptr == '#')
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break;
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ptr++;
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}
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while (isspace(ptr[-1]))
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ptr--;
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*ptr = '\0';
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/* Check what keyword we have */
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if (strcmp(keyword, "mousewheel") == 0) {
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config.mousewheel = atoi(value);
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} else if (strcmp(keyword, "osd") == 0) {
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config.osd = atoi(value);
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} else if (strcmp(keyword, "osdcolor") == 0) {
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if (config.osd_color)
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free(config.osd_color);
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config.osd_color = strdup(ptr);
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}
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if ((ptr = strstr(buf, "wheelstep="))) {
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ptr += 10;
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/* detect old style config */
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if (atoi(ptr) > 1)
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config.scrollstep = (float)atoi(ptr) / 100.0;
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config.osd_color = strdup(value);
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} else if (strcmp(keyword, "scrolltext") == 0) {
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config.scrolltext = atoi(value);
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} else if (strcmp(keyword, "wheelbtn1") == 0) {
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config.wheel_button_up = atoi(value);
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} else if (strcmp(keyword, "wheelbtn2") == 0) {
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config.wheel_button_down = atoi(value);
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} else if (strcmp(keyword, "wheelstep") == 0) {
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double val;
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val = atof(value);
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if (val < 0.0 || val > 100.0)
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fprintf(stderr, "wmix:error: value %f is out of range for wheelstep in %s at line %d\n",
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val, filename, line);
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else if (val >= 1.0)
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config.scrollstep = val / 100.0;
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else if (val > 0.0)
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config.scrollstep = val;
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else
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config.scrollstep = atof(ptr);
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}
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if ((ptr = strstr(buf, "wheelbtn1="))) {
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ptr += 10;
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config.wheel_button_up = atoi(ptr);
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}
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if ((ptr = strstr(buf, "wheelbtn2="))) {
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ptr += 10;
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config.wheel_button_down = atoi(ptr);
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fprintf(stderr, "wmix:error: value '%s' not understood for wheelstep in %s at line %d\n",
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value, filename, line);
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} else {
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fprintf(stderr, "wmix:warning: unknow keyword '%s' at line %d of \"%s\", ignored\n",
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keyword, line, filename);
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}
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}
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fclose(fp);
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@ -81,6 +81,8 @@ default=\fI3\fP)
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.br
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For compatibility, values between 0.0 and 1.0 will be considered as a raw percentage
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.LP
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You may include comments in the file using the character # in which case
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everything will be ignored from the character to the end of the line.
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.
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.SH CHANNEL NAMES
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The names for the different channels are provided by ALSA/OSS as short names, for which
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