charct.c

/* Suggested makefile:
----------
P=charct
objects=string_utilities.o process_dir.o unictr.o
CFLAGS=`pkg-config --cflags glib-2.0` -g -Wall -std=gnu11 -O3
LDLIBS=`pkg-config --libs   glib-2.0`

$(P): $(objects)
----------
*/
#define _GNU_SOURCE             //get stdio.h to define asprintf
#include "string_utilities.h"   //string_from_file
#include "process_dir.h"
#include "unictr.h"
#include <glib.h>
#include <stdlib.h>             //free

void hash_a_file(filestruct path){
    GHashTable *hash = path.data;
    char *sf = string_from_file(path.fullname);
    if (!sf) return;
    char *sf_copy = sf;
    if (g_utf8_validate(sf, -1, NULL)){
        for (gunichar uc; (uc = g_utf8_get_char(sf))!='\0';
            sf = g_utf8_next_char(sf))
                hash_a_character(uc, hash);
    }
    free(sf_copy);
}

int main(int argc, char **argv){
    GHashTable *hash;
    hash = new_unicode_counting_hash();
    char *start=NULL;
    if (argc>1) asprintf(&start, "%s", argv[1]);
    printf("Hashing %s\n", start ? start: "the current directory");
    process_dir(.name=start, .file_action=hash_a_file, .data=hash);
    g_hash_table_foreach(hash, printone, NULL);
}