ask_group.c

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/*************************************************************
* I_ask_group_old (prompt,group)
*
* prompt the user for an imagery group file name
*************************************************************/
#include <string.h>
#include <grass/gis.h>
#include <grass/imagery.h>
static int ask_group(char *, char *);


int I_ask_group_old(char *prompt, char *group)
{
    while (1) {
        if (*prompt == 0)
            prompt = "Select an imagery group file";
        if (!ask_group(prompt, group))
            return 0;
        if (I_find_group(group))
            return 1;
        fprintf(stderr, "\n** %s - not found **\n\n", group);
    }
}

static int ask_group(char *prompt, char *group)
{
    char buf[1024];

    while (1) {
        fprintf(stderr, "\n%s\n", prompt);
        fprintf(stderr,
                "Enter 'list' for a list of existing imagery groups\n");
        fprintf(stderr, "Enter 'list -f' for a verbose listing\n");
        fprintf(stderr, "Hit RETURN %s\n", G_get_ask_return_msg());
        fprintf(stderr, "> ");
        if (!G_gets(buf))
            continue;

        G_squeeze(buf);
        fprintf(stderr, "<%s>\n", buf);
        if (*buf == 0)
            return 0;

        if (strcmp(buf, "list") == 0)
            I_list_groups(0);
        else if (strcmp(buf, "list -f") == 0)
            I_list_groups(1);
        else if (G_legal_filename(buf) < 0)
            fprintf(stderr, "\n** <%s> - illegal name **\n\n", buf);
        else
            break;
    }
    strcpy(group, buf);
    return 1;
}