parser: Add IANA time_zone support for native timestamps [Backport to 4.2]

.github/workflows/call-windows-unit-tests.yaml

@@ -140,7 +140,6 @@ jobs:
             -D FLB_WITHOUT_flb-rt-out_forward=On `
             -D FLB_WITHOUT_flb-rt-in_disk=On `
             -D FLB_WITHOUT_flb-rt-in_proc=On `
-            -D FLB_WITHOUT_flb-it-parser=On `
             -D FLB_WITHOUT_flb-it-unit_sizes=On `
             -D FLB_WITHOUT_flb-it-network=On `
             -D FLB_WITHOUT_flb-it-pack=On `

include/fluent-bit/flb_parser.h

@@ -49,6 +49,8 @@ struct flb_parser {
     char *time_key;       /* field name that contains the time */
     int time_offset;      /* fixed UTC offset */
     int time_system_timezone; /* use the system timezone as a fallback */
+    char *time_zone;      /* IANA timezone for naive timestamps */
+    void *time_zone_data; /* parsed native timezone data */
     int time_keep;        /* keep time field */
     int time_strict;      /* parse time field strictly */
     int logfmt_no_bare_keys; /* in logfmt parsers, require all keys to have values */
@@ -91,6 +93,8 @@ static inline time_t flb_parser_tm2time(const struct flb_tm *src,
     return res;
 }
 
+time_t flb_parser_tm2time_parser(const struct flb_tm *src,
+                                 struct flb_parser *parser);
 
 struct flb_parser *flb_parser_create(const char *name, const char *format,
                                      const char *p_regex,
@@ -105,6 +109,22 @@ struct flb_parser *flb_parser_create(const char *name, const char *format,
                                      int types_len,
                                      struct mk_list *decoders,
                                      struct flb_config *config);
+struct flb_parser *flb_parser_create_with_time_zone(const char *name,
+                                     const char *format,
+                                     const char *p_regex,
+                                     int skip_empty,
+                                     const char *time_fmt,
+                                     const char *time_key,
+                                     const char *time_offset,
+                                     int time_keep,
+                                     int time_strict,
+                                     int time_system_timezone,
+                                     const char *time_zone,
+                                     int logfmt_no_bare_keys,
+                                     struct flb_parser_types *types,
+                                     int types_len,
+                                     struct mk_list *decoders,
+                                     struct flb_config *config);
 int flb_parser_conf_file_stat(const char *file, struct flb_config *config);
 int flb_parser_conf_file(const char *file, struct flb_config *config);
 int flb_parser_load_parser_definitions(const char *cfg, struct flb_cf *cf,