root/ext/mbstring/libmbfl/tests/strcut.c

DEFINITIONS

1. hexdump
2. main

/**
 * this is a small sample script to use libmbfl.
 * Rui Hirokawa <hirokawa@php.net>
 *
 * this file is encoded in EUC-JP.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "mbfl/mbfilter.h"

static void hexdump(const mbfl_string *ptr)
{
        unsigned int i;

        for (i = 0; i < ptr->len; i++) {
                printf("%%%02x", ptr->val[i]);
        }

        printf(" (%u)\n", ptr->len);
}

int main(int argc, char **argv)
{
        enum mbfl_no_encoding no_encoding;
        enum mbfl_no_language no_language;
        mbfl_memory_device dev;
        mbfl_string string;
        int offset, length;
        int final = 0;
        int state = 0;

        if (argc < 5) {
                fprintf(stderr, "Usage: %s lang encoding offset length\n", argv[0]);
                return EXIT_FAILURE;
        }

        if ((no_language = mbfl_name2no_language(argv[1])) ==
                        mbfl_no_language_invalid) {
                printf("Unsupported NLS: %s\n", argv[1]);
                return EXIT_FAILURE;
        }

        if ((no_encoding = mbfl_name2no_encoding(argv[2])) ==
                        mbfl_no_encoding_invalid) {
                printf("Unsupported encoding: %s\n", argv[2]);
                return EXIT_FAILURE;
        }

        errno = 0;
        offset = strtol(argv[3], NULL, 10);
        if (errno) {
                printf("Invalid offset: %s\n", argv[3]);
                return EXIT_FAILURE;
        }

        length = strtol(argv[4], NULL, 10);
        if (errno) {
                printf("Invalid length: %s\n", argv[4]);
                return EXIT_FAILURE;
        }


        do {
                mbfl_string result;

                mbfl_memory_device_init(&dev, 0, 4096);
                mbfl_string_init_set(&string, no_language, no_encoding);

                for (;;) {
                        const int c = fgetc(stdin);

                        if (c == EOF) {
                                final = 1;
                                break;
                        } else if (c == 10) {
                                if (state == 1) {
                                        state = 0;
                                        continue;
                                }
                                break;
                        } else if (c == 13) {
                                state = 1;
                                break;
                        }

                        if (dev.pos >= dev.length) {
                                if (dev.length + dev.allocsz < dev.length) {
                                        printf("Unable to allocate memory\n");
                                        return EXIT_FAILURE;
                                }

                                mbfl_memory_device_realloc(&dev, dev.length + dev.allocsz,
                                                dev.allocsz);
                        }

                        dev.buffer[dev.pos++] = (unsigned char)c;
                }

                mbfl_memory_device_result(&dev, &string);
                if (mbfl_strcut(&string, &result, offset, length)) {
                        hexdump(&result);
                        mbfl_string_clear(&result);
                } else {
                        printf("***ERROR***\n");
                }
                mbfl_string_clear(&string);
        } while (!final);

        return EXIT_SUCCESS;
}