78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <climits>
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#include <string>
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#include "texture.hxx"
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#define NCOLS 4320
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#define NROWS 2160
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enum STR2INT_ERROR { SUCCESS, OVERFLOW, UNDERFLOW, INCONVERTIBLE };
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STR2INT_ERROR str2int (int &i, char const *s, int base = 0)
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{
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char *end;
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long l;
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errno = 0;
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l = strtol(s, &end, base);
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if ((errno == ERANGE && l == LONG_MAX) || l > INT_MAX) {
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std::cerr << "OVERFLOW" << std::endl;
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return OVERFLOW;
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}
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if ((errno == ERANGE && l == LONG_MIN) || l < INT_MIN) {
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std::cerr << "UNDERFLOW" << std::endl;
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return UNDERFLOW;
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}
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if (*s == '\0' || end == s) {
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std::cerr << "INCONVERTIBLE: " << s << std::endl;
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return INCONVERTIBLE;
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}
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i = l;
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return SUCCESS;
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}
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int main(int argc, char **argv)
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{
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if (argc < 3) {
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printf("Uage: %s <infile>.asc <outfile>.rgb\n\n", argv[0]);
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exit(-1);
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}
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const char *infile = argv[1];
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const char *outfile = argv[2];
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SGTexture texture(NCOLS, NROWS);
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std::ifstream file(infile);
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std::string str;
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texture.prepare(NCOLS, NROWS);
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texture.set_colors(1);
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GLuint row = 0;
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unsigned int line = 0;
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while (std::getline(file, str))
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{
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GLuint col = 0;
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int num = 0;
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if (++line < 7) continue;
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std::istringstream iss(str);
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std::string token;
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while (std::getline(iss, token, ' '))
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{
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if (str2int(num, token.c_str(), 10) == SUCCESS)
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{
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GLubyte val = (num == 32) ? 0 : 4*num;
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texture.set_pixel(col++, NROWS-row, &val);
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}
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}
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row++;
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}
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texture.write_texture(outfile);
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}
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