input/output formats: s/extension/id/.

The struct entry 'extension' is not really a (filename) extension, but
rather a unique ID used for input or output formats, e.g. in the sigrok
CLI or GUI interface. Thus, rename it accordingly.

input/input_binary.c

@@ -99,7 +99,7 @@ static int loadfile(struct sr_input *in, const char *filename)
 }
 
 struct sr_input_format input_binary = {
-	.extension = "binary",
+	.id = "binary",
 	.description = "Raw binary",
 	.format_match = format_match,
 	.init = init,

output/output_analog.c

@@ -439,7 +439,7 @@ static int data_ascii(struct sr_output *o, const char *data_in,
 #endif
 
 struct sr_output_format output_analog_bits = {
-	.extension = "analog_bits",
+	.id = "analog_bits",
 	.description = "Bits (takes argument, default 64)",
 	.df_type = SR_DF_ANALOG,
 	.init = init_bits,
@@ -448,7 +448,7 @@ struct sr_output_format output_analog_bits = {
 };
 #if 0
 struct sr_output_format output_analog_hex = {
-	.extension = "analog_hex",
+	.id = "analog_hex",
 	.description = "Hexadecimal (takes argument, default 192)",
 	.df_type = SR_DF_ANALOG,
 	.init = init_hex,
@@ -457,7 +457,7 @@ struct sr_output_format output_analog_hex = {
 };
 
 struct sr_output_format output_analog_ascii = {
-	.extension = "analog_ascii",
+	.id = "analog_ascii",
 	.description = "ASCII (takes argument, default 74)",
 	.df_type = SR_DF_ANALOG,
 	.init = init_ascii,

output/output_binary.c

@@ -60,7 +60,7 @@ static int data(struct sr_output *o, const char *data_in, uint64_t length_in,
 }
 
 struct sr_output_format output_binary = {
-	.extension = "binary",
+	.id = "binary",
 	.description = "Raw binary",
 	.df_type = SR_DF_LOGIC,
 	.init = NULL,

output/output_gnuplot.c

@@ -194,7 +194,7 @@ static int data(struct sr_output *o, const char *data_in, uint64_t length_in,
 }
 
 struct sr_output_format output_gnuplot = {
-	.extension = "gnuplot",
+	.id = "gnuplot",
 	.description = "Gnuplot",
 	.df_type = SR_DF_LOGIC,
 	.init = init,
@@ -340,7 +340,7 @@ static int analog_data(struct sr_output *o, char *data_in, uint64_t length_in,
 }
 
 struct sr_output_format output_analog_gnuplot = {
-	.extension = "analog_gnuplot",
+	.id = "analog_gnuplot",
 	.description = "Gnuplot analog",
 	.df_type = SR_DF_ANALOG,
 	.init = analog_init,

output/output_ols.c

@@ -124,7 +124,7 @@ static int data(struct sr_output *o, const char *data_in, uint64_t length_in,
 }
 
 struct sr_output_format output_ols = {
-	.extension = "ols",
+	.id = "ols",
 	.description = "OpenBench Logic Sniffer",
 	.df_type = SR_DF_LOGIC,
 	.init = init,

output/output_skeleton.c

@@ -38,7 +38,7 @@ static int event(struct sr_output *o, int event_type, char **data_out,
 }
 
 struct sr_output_format output_foo = {
-	.extension = "foo",
+	.id = "foo",
 	.description = "The foo format",
 	.df_type = SR_DF_LOGIC,
 	.init = init,

output/output_vcd.c

@@ -213,7 +213,7 @@ static int data(struct sr_output *o, const char *data_in, uint64_t length_in,
 }
 
 struct sr_output_format output_vcd = {
-	.extension = "vcd",
+	.id = "vcd",
 	.description = "Value Change Dump (VCD)",
 	.df_type = SR_DF_LOGIC,
 	.init = init,

output/text/ascii.c

@@ -114,7 +114,7 @@ int data_ascii(struct sr_output *o, const char *data_in, uint64_t length_in,
 }
 
 struct sr_output_format output_text_ascii = {
-	.extension = "ascii",
+	.id = "ascii",
 	.description = "ASCII (takes argument, default 74)",
 	.df_type = SR_DF_LOGIC,
 	.init = init_ascii,

output/text/bits.c

@@ -101,7 +101,7 @@ int data_bits(struct sr_output *o, const char *data_in, uint64_t length_in,
 }
 
 struct sr_output_format output_text_bits = {
-	.extension = "bits",
+	.id = "bits",
 	.description = "Bits (takes argument, default 64)",
 	.df_type = SR_DF_LOGIC,
 	.init = init_bits,

output/text/hex.c

@@ -90,7 +90,7 @@ int data_hex(struct sr_output *o, const char *data_in, uint64_t length_in,
 }
 
 struct sr_output_format output_text_hex = {
-	.extension = "hex",
+	.id = "hex",
 	.description = "Hexadecimal (takes argument, default 192)",
 	.df_type = SR_DF_LOGIC,
 	.init = init_hex,

sigrok.h

@@ -135,7 +135,7 @@ struct sr_input {
 };
 
 struct sr_input_format {
-	char *extension;
+	char *id;
 	char *description;
 	int (*format_match) (const char *filename);
 	int (*init) (struct sr_input *in);
@@ -150,7 +150,7 @@ struct sr_output {
 };
 
 struct sr_output_format {
-	char *extension;
+	char *id;
 	char *description;
 	int df_type;
 	int (*init) (struct sr_output *o);