v.out.ascii: OGR support (read access)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@39881 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.out.ascii/args.c

@@ -9,7 +9,7 @@
 
 void parse_args(int argc, char **argv,
 		char **input, char**output, int *format, int *dp, char **delim,
-		int *field, char ***columns, char **where, int *region, int *old_format)
+		char **field, char ***columns, char **where, int *region, int *old_format)
 {
     struct Option *input_opt, *output_opt, *format_opt, *dp_opt, *delim_opt,
 	*field_opt, *column_opt, *where_opt;
@@ -17,12 +17,22 @@ void parse_args(int argc, char **argv,
     
     input_opt = G_define_standard_option(G_OPT_V_INPUT);
 
+    field_opt = G_define_standard_option(G_OPT_V_FIELD);
+    field_opt->guisection = _("Selection");
+    
     output_opt = G_define_standard_option(G_OPT_F_OUTPUT);
     output_opt->description =
 	_("Path to resulting ASCII file ('-' for standard output) "
 	  "or ASCII vector name if '-o' is defined");
     output_opt->answer = "-";
+
+    column_opt = G_define_standard_option(G_OPT_DB_COLUMNS);
+    column_opt->description = _("Name of attribute column(s) to be exported (point mode)");
+    column_opt->guisection = _("Points");
     
+    where_opt = G_define_standard_option(G_OPT_DB_WHERE);
+    where_opt->guisection = _("Selection");
+
     format_opt = G_define_option();
     format_opt->key = "format";
     format_opt->type = TYPE_STRING;
@@ -46,16 +56,6 @@ void parse_args(int argc, char **argv,
 	_("Number of significant digits (floating point only)");
     dp_opt->guisection = _("Points");
     
-    field_opt = G_define_standard_option(G_OPT_V_FIELD);
-    field_opt->guisection = _("Selection");
-
-    column_opt = G_define_standard_option(G_OPT_DB_COLUMNS);
-    column_opt->description = _("Name of attribute column(s) to be exported (point mode)");
-    column_opt->guisection = _("Points");
-    
-    where_opt = G_define_standard_option(G_OPT_DB_WHERE);
-    where_opt->guisection = _("Selection");
-
     old_flag = G_define_flag();
     old_flag->key = 'o';
     old_flag->description = _("Create old (version 4) ASCII file");
@@ -91,7 +91,7 @@ void parse_args(int argc, char **argv,
     else
 	*delim = G_store(delim_opt->answer);
     
-    *field = atoi(field_opt->answer);
+    *field = G_store(field_opt->answer);
     *columns = NULL;
     if (column_opt->answer) {
 	int i, nopt;

vector/v.out.ascii/local_proto.h

@@ -1,4 +1,4 @@
 /* args.c */
 void parse_args(int, char **,
 		char **, char**, int *, int *, char **,
-		int *, char ***, char **, int *, int *);
+		char **, char ***, char **, int *, int *);

vector/v.out.ascii/main.c

@@ -5,7 +5,7 @@
  * AUTHOR(S):  Michael Higgins, U.S. Army Construction Engineering Research Laboratory
  *             James Westervelt, U.S. Army Construction Engineering Research Laboratory
  *             Radim Blazek, ITC-Irst, Trento, Italy
- *             Martin Landa, CTU in Prague, Czech Republic (v.out.ascii.db merged & update for GRASS7)
+ *             Martin Landa, CTU in Prague, Czech Republic (v.out.ascii.db merged & update (OGR) for GRASS7)
  *
  * PURPOSE:    Writes GRASS vector data as ASCII files
  * COPYRIGHT:  (C) 2000-2009 by the GRASS Development Team
@@ -33,7 +33,7 @@ int main(int argc, char *argv[])
     struct Map_info Map;
 
     FILE *ascii, *att;
-    char *input, *output, *delim, **columns, *where;
+    char *input, *output, *delim, **columns, *where, *field_name;
     int format, dp, field, ret, region, old_format;
     int ver, pnt;
 
@@ -44,11 +44,11 @@ int main(int argc, char *argv[])
     G_add_keyword(_("export"));
     G_add_keyword(_("ascii"));
     module->description =
-	_("Converts a GRASS binary vector map to a GRASS ASCII vector map.");
+	_("Exports a vector map to a GRASS ASCII vector representation.");
 
     parse_args(argc, argv, &input, &output, &format, &dp, &delim,
-	       &field, &columns, &where, &region, &old_format);
-
+	       &field_name, &columns, &where, &region, &old_format);
+    
     if (format == GV_ASCII_FORMAT_STD && columns) {
 	G_warning(_("Parameter 'column' ignored in standard mode"));
     }
@@ -68,17 +68,19 @@ int main(int argc, char *argv[])
 
     if (format != GV_ASCII_FORMAT_WKT) {
 	Vect_set_open_level(1);	/* topology not needed */
-	if (Vect_open_old(&Map, input, "") < 0)
+	if (Vect_open_old2(&Map, input, "", field_name) < 0)
 	    G_fatal_error(_("Unable to open vector map <%s>"),
 			  input);
     }
     else {
-	if (Vect_open_old(&Map, input, "") < 2) /* topology required for polygons */
+	if (Vect_open_old2(&Map, input, "", field_name) < 2) /* topology required for polygons */
 	    G_warning(_("Unable to open vector map <%s> at topology level. "
 			"Only points, lines can be processed."),
 		      input);
     }
     
+    field = Vect_get_field_number(&Map, field_name);
+    
     if (strcmp(output, "-") != 0) {
 	if (ver == 4) {
 	    ascii = G_fopen_new("dig_ascii", output);