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input/csv: improve robustness of "use header for channel names" 

Don't clobber the value of the user provided 'header' option. Use a
separate flag to track whether the header line was seen before, or
needs to get skipped when it passes by.
This commit is contained in:
Gerhard Sittig 2019-10-14 19:33:29 +02:00
parent 246aca5f54
commit de8fe3b515
1 changed files with 6 additions and 5 deletions
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11
src/input/csv.c
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@ -156,7 +156,8 @@ struct context {
* Determines if the first line should be treated as header and used for
* channel names in multi column mode.
*/
gboolean header;
gboolean use_header;
gboolean header_seen;
/* Format sample data is stored in single column mode. */
enum single_col_format format;
@ -574,7 +575,7 @@ static int init(struct sr_input *in, GHashTable *options)
inc->first_channel = g_variant_get_uint32(g_hash_table_lookup(options, "first-channel"));
inc->header = g_variant_get_boolean(g_hash_table_lookup(options, "header"));
inc->use_header = g_variant_get_boolean(g_hash_table_lookup(options, "header"));
inc->start_line = g_variant_get_uint32(g_hash_table_lookup(options, "startline"));
if (inc->start_line < 1) {
@ -737,7 +738,7 @@ static int initial_parse(const struct sr_input *in, GString *buf)
channel_name = g_string_sized_new(64);
for (i = 0; i < inc->num_channels; i++) {
column = columns[i];
if (inc->header && inc->multi_column_mode && column[0] != '\0')
if (inc->use_header && inc->multi_column_mode && column[0] != '\0')
g_string_assign(channel_name, column);
else
g_string_printf(channel_name, "%zu", i);
@ -892,9 +893,9 @@ static int process_buffer(struct sr_input *in, gboolean is_eof)
}
/* Skip the header line, its content was used as the channel names. */
if (inc->header) {
if (inc->use_header && !inc->header_seen) {
sr_spew("Header line %zu skipped.", inc->line_number);
inc->header = FALSE;
inc->header_seen = TRUE;
continue;
}