modp_burl_gen.c

#include "arraytoc.h"

static void hexencodemap(void)
{
    static const char sHexChars[] = "0123456789ABCDEF";
    int i;
    char hexEncode1[256];
    char hexEncode2[256];
    for (i = 0; i < 256; ++i) {
        hexEncode1[i] = sHexChars[i >> 4];
        hexEncode2[i] = sHexChars[i & 0x0f];
    }

    char_array_to_c(hexEncode1, sizeof(hexEncode1), "gsHexEncodeMap1");
    char_array_to_c(hexEncode2, sizeof(hexEncode2), "gsHexEncodeMap2");
}

static void urlencodemap(void)
{
    uint32_t i;
    char urlEncodeMap[256];

    /* 0 means unsafe */
    for (i = 0; i < 256; ++i) {
        urlEncodeMap[i] = 0;
    }

    /* upper case */
    for (i = 'A'; i <= 'Z'; ++i) {
        urlEncodeMap[i] = (char)i;
    }
    /* lower case */
    for (i = 'a'; i <= 'z'; ++i) {
        urlEncodeMap[i] = (char)i;
    }
    /* numbers */
    for (i = '0'; i <= '9'; ++i) {
        urlEncodeMap[i] = (char)i;
    }
    /* safe chars */
    urlEncodeMap[(int)'.'] = '.';
    urlEncodeMap[(int)'-'] = '-';
    urlEncodeMap[(int)'_'] = '_';
    /* space is special */
    urlEncodeMap[(int)' '] = '+';

    char_array_to_c(urlEncodeMap, sizeof(urlEncodeMap), "gsUrlEncodeMap");
}

static void urlencodeminmap(void)
{
    int i;
    char urlEncodeMap[256];
    const char safechar[] = { '_', '.', '-', '~',
        '!', '$', '(', ')', '*', ',', ';',
        ':', '@', '/', '?' };

    int imax = sizeof(safechar);

    /* 0 means unsafe */
    for (i = 0; i < 256; ++i) {
        urlEncodeMap[i] = 0;
    }

    /* upper case */
    for (i = 'A'; i <= 'Z'; ++i) {
        urlEncodeMap[i] = (char)i;
    }
    /* lower case */
    for (i = 'a'; i <= 'z'; ++i) {
        urlEncodeMap[i] = (char)i;
    }
    /* numbers */
    for (i = '0'; i <= '9'; ++i) {
        urlEncodeMap[i] = (char)i;
    }

    /* space */
    urlEncodeMap[(int)' '] = '+';

    for (i = 0; i < imax; ++i) {
        urlEncodeMap[(int)(safechar[i])] = safechar[i];
    }

    char_array_to_c(urlEncodeMap, sizeof(urlEncodeMap), "gsUrlEncodeMinMap");
}

static void hexdecodemap(void)
{
    uint32_t i;
    uint32_t map[256];
    for (i = 0; i <= 255; ++i) {
        map[i] = 256;
    }

    /* digits */
    for (i = '0'; i <= '9'; ++i) {
        map[i] = i - '0';
    }

    /* upper */
    for (i = 'A'; i <= 'F'; ++i) {
        map[i] = i - 'A' + 10;
    }

    /* lower */
    for (i = 'a'; i <= 'f'; ++i) {
        map[i] = i - 'a' + 10;
    }

    uint32_array_to_c(map, sizeof(map) / sizeof(uint32_t), "gsHexDecodeMap");
}

int main(void)
{
    urlencodemap();
    urlencodeminmap();
    hexdecodemap();
    hexencodemap();
    return 0;
}