Function Assimp_Extract

tools/assimp_cmd/ImageExtractor.cpp:218–361

----------------------------------------------------------------------------------- Implementation of the assimp extract utility

// -----------------------------------------------------------------------------------
// Implementation of the assimp extract utility
int Assimp_Extract(const char *const *params, unsigned int num) {
    const char *const invalid = "assimp extract: Invalid number of arguments. See \'assimp extract --help\'\n";
    // assimp extract in out [options]
    if (num < 1) {
        printf(invalid);
        return AssimpCmdError::InvalidNumberOfArguments;
    }

    // --help
    if (!strcmp(params[0], "-h") || !strcmp(params[0], "--help") || !strcmp(params[0], "-?")) {
        printf("%s", AICMD_MSG_DUMP_HELP_E);
        return AssimpCmdError::Success;
    }

    std::string in = std::string(params[0]);
    std::string out = (num > 1 ? std::string(params[1]) : "-");

    // get import flags
    ImportData import;
    ProcessStandardArguments(import, params + 1, num - 1);

    bool nosuffix = false;
    unsigned int texIdx = 0xffffffff, flags = 0;

    // process other flags
    std::string extension = "bmp";
    for (unsigned int i = (out[0] == '-' ? 1 : 2); i < num; ++i) {
        if (!params[i]) {
            continue;
        }

        if (!strncmp(params[i], "-f", 2)) {
            extension = std::string(params[i] + 2);
        } else if (!strncmp(params[i], "--format=", 9)) {
            extension = std::string(params[i] + 9);
        } else if (!strcmp(params[i], "--nosuffix") || !strcmp(params[i], "-s")) {
            nosuffix = true;
        } else if (!strncmp(params[i], "--texture=", 10)) {
            texIdx = Assimp::strtoul10(params[i] + 10);
        } else if (!strncmp(params[i], "-t", 2)) {
            texIdx = Assimp::strtoul10(params[i] + 2);
        } else if (!strcmp(params[i], "-ba") || !strcmp(params[i], "--bmp-with-alpha")) {
            flags |= AI_EXTRACT_WRITE_BMP_ALPHA;
        }
#if 0
        else {
            printf("Unknown parameter: %s\n",params[i]);
            return 10;
        }
#endif
    }

    std::transform(extension.begin(), extension.end(), extension.begin(), ai_tolower<char>);

    if (out[0] == '-') {
        // take file name from input file
        std::string::size_type s = in.find_last_of('.');
        if (s == std::string::npos)