tempfile.c

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#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <grass/gis.h>


char *G_tempfile(void)
{
    return G__tempfile(getpid());
}


char *G__tempfile(int pid)
{
    char path[GPATH_MAX];
    char name[GNAME_MAX];
    char element[100];
    static int uniq = 0;
    struct stat st;

    if (pid <= 0)
        pid = getpid();
    G__temp_element(element);
    do {
        sprintf(name, "%d.%d", pid, uniq++);
        G__file_name(path, element, name, G_mapset());
    }
    while (stat(path, &st) == 0);

    return G_store(path);
}


int G__temp_element(char *element)
{
    const char *machine;

    strcpy(element, ".tmp");
    machine = G__machine_name();
    if (machine != NULL && *machine != 0) {
        strcat(element, "/");
        strcat(element, machine);
    }
    G__make_mapset_element(element);

    return 0;
}