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-rw-r--r--options.c431
1 files changed, 0 insertions, 431 deletions
diff --git a/options.c b/options.c
deleted file mode 100644
index e25930a..0000000
--- a/options.c
+++ /dev/null
@@ -1,431 +0,0 @@
-/*********************************************************************
- * kd-forest *
- * Copyright (C) 2014 Tavian Barnes <tavianator@tavianator.com> *
- * *
- * This program is free software. It comes without any warranty, to *
- * the extent permitted by applicable law. You can redistribute it *
- * and/or modify it under the terms of the Do What The Fuck You Want *
- * To Public License, Version 2, as published by Sam Hocevar. See *
- * the COPYING file or http://www.wtfpl.net/ for more details. *
- *********************************************************************/
-
-#include "options.h"
-#include <ctype.h>
-#include <limits.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-#if __unix__
-# include <unistd.h>
-#endif
-
-static bool
-parse_arg(int argc, char *argv[],
- const char *short_form, const char *long_form,
- const char **value, int *i, bool *error)
-{
- size_t short_len = short_form ? strlen(short_form) : 0;
- size_t long_len = long_form ? strlen(long_form) : 0;
-
- const char *actual_form;
- const char *arg = argv[*i];
- const char *candidate = NULL;
-
- if (short_form && strncmp(arg, short_form, short_len) == 0) {
- actual_form = short_form;
- if (strlen(arg) > short_len) {
- candidate = arg + short_len;
- }
- } else if (long_form && strncmp(arg, long_form, long_len) == 0) {
- actual_form = long_form;
- if (strlen(arg) > long_len) {
- if (arg[long_len] == '=') {
- candidate = arg + long_len + 1;
- } else {
- return false;
- }
- }
- } else {
- return false;
- }
-
- if (value) {
- if (candidate) {
- *value = candidate;
- } else if (*i < argc - 1) {
- ++*i;
- *value = argv[*i];
- } else {
- fprintf(stderr, "Expected a value for %s\n", arg);
- *error = true;
- return false;
- }
- } else if (candidate) {
- fprintf(stderr, "Unexpected value for %s: `%s'\n",
- actual_form, candidate);
- *error = true;
- return false;
- }
-
- return true;
-}
-
-static bool
-str_to_uint(const char *str, unsigned int *value)
-{
- char *endptr;
- long result = strtol(str, &endptr, 10);
- if (*str == '\0' || *endptr != '\0') {
- return false;
- }
- if (result < 0 || result > UINT_MAX) {
- return false;
- }
-
- *value = result;
- return true;
-}
-
-static void
-strcatinc(char **destp, const char *src)
-{
- strcpy(*destp, src);
- *destp += strlen(src);
-}
-
-typedef enum {
- COLORIZE_NORMAL,
- COLORIZE_AT,
- COLORIZE_BANG,
- COLORIZE_STAR,
- COLORIZE_SHORT_OPTION,
- COLORIZE_LONG_OPTION,
-} colorize_state_t;
-
-static void
-print_colorized(FILE *file, bool tty, const char *format, ...)
-{
- const char *bold = tty ? "\033[1m" : "";
- const char *red = tty ? "\033[1;31m" : "";
- const char *green = tty ? "\033[1;32m" : "";
- const char *normal = tty ? "\033[0m" : "";
-
- size_t size = strlen(format) + 1;
- char colorized[16*size];
- char *builder = colorized;
-
- colorize_state_t state = COLORIZE_NORMAL;
- for (size_t i = 0; i < size; ++i) {
- char c = format[i];
-
- if (c == '\\') {
- *builder++ = format[++i];
- continue;
- }
-
- switch (state) {
- case COLORIZE_AT:
- if (c == '@') {
- strcatinc(&builder, normal);
- state = COLORIZE_NORMAL;
- } else {
- *builder++ = c;
- }
- break;
-
- case COLORIZE_BANG:
- if (c == '!') {
- strcatinc(&builder, normal);
- state = COLORIZE_NORMAL;
- } else {
- *builder++ = c;
- }
- break;
-
- case COLORIZE_STAR:
- if (c == '*') {
- strcatinc(&builder, normal);
- state = COLORIZE_NORMAL;
- } else {
- *builder++ = c;
- }
- break;
-
- case COLORIZE_SHORT_OPTION:
- *builder++ = c;
- strcatinc(&builder, normal);
- state = COLORIZE_NORMAL;
- break;
-
- case COLORIZE_LONG_OPTION:
- if (!isalpha(c) && c != '-') {
- strcatinc(&builder, normal);
- state = COLORIZE_NORMAL;
- }
- *builder++ = c;
- break;
-
- default:
- switch (c) {
- case '@':
- state = COLORIZE_AT;
- strcatinc(&builder, green);
- break;
-
- case '!':
- state = COLORIZE_BANG;
- strcatinc(&builder, bold);
- break;
-
- case '*':
- state = COLORIZE_STAR;
- strcatinc(&builder, red);
- break;
-
- case '-':
- if (c == '-') {
- if (format[i + 1] == '-') {
- state = COLORIZE_LONG_OPTION;
- } else {
- state = COLORIZE_SHORT_OPTION;
- }
- strcatinc(&builder, red);
- }
- *builder++ = c;
- break;
-
- default:
- *builder++ = c;
- break;
- }
- break;
- }
- }
-
- va_list args;
- va_start(args, format);
- vprintf(colorized, args);
- va_end(args);
-}
-
-void
-print_usage(FILE *file, const char *command, bool verbose)
-{
-#if __unix__
- bool tty = isatty(fileno(file));
-#else
- bool tty = false;
-#endif
-
- size_t length = strlen(command);
- char whitespace[length + 1];
- memset(whitespace, ' ', length);
- whitespace[length] = '\0';
-
-#define usage(...) print_colorized(file, tty, __VA_ARGS__)
- usage("Usage:\n");
- usage(" !$! *%s* [-b|--bit-depth @DEPTH@]\n", command);
- usage(" %s [-s|--hue-sort] [-r|--random] [-M|--morton] [-H|--hilbert]\n", whitespace);
- usage(" %s [-t|--stripe] [-T|--no-stripe]\n", whitespace);
- usage(" %s [-l|--selection @min@|@mean@]\n", whitespace);
- usage(" %s [-c|--color-space @RGB@|@Lab@|@Luv@]\n", whitespace);
- usage(" %s [-w|--width @WIDTH@] [-h|--height @HEIGHT@]\n", whitespace);
- usage(" %s [-x @X@] [-y @Y@]\n", whitespace);
- usage(" %s [-a|--animate]\n", whitespace);
- usage(" %s [-o|--output @PATH@]\n", whitespace);
- usage(" %s [-e|--seed @SEED@]\n", whitespace);
- usage(" %s [-?|--help]\n", whitespace);
-
- if (!verbose) {
- return;
- }
-
- usage("\n");
- usage(" -b, --bit-depth @DEPTH@:\n");
- usage(" Use all @DEPTH@\\-bit colors (!default!: @24@)\n\n");
- usage(" -s, --hue-sort:\n");
- usage(" Sort colors by hue (!default!)\n");
- usage(" -r, --random:\n");
- usage(" Randomize colors\n");
- usage(" -M, --morton:\n");
- usage(" Place colors in Morton order (Z\\-order)\n");
- usage(" -H, --hilbert:\n");
- usage(" Place colors in Hilbert curve order\n\n");
- usage(" -t, --stripe:\n");
- usage(" -T, --no-stripe:\n");
- usage(" Whether to reduce artifacts by iterating through the colors in\n");
- usage(" multiple stripes (!default!: --stripe)\n\n");
- usage(" -l, --selection @min@|@mean@:\n");
- usage(" Specify the selection mode (!default!: @min@)\n\n");
- usage(" @min@: Pick the pixel with the closest neighboring pixel\n");
- usage(" @mean@: Pick the pixel with the closest average of all its neighbors\n\n");
- usage(" -c, --color-space @RGB@|@Lab@|@Luv@:\n");
- usage(" Use the given color space (!default!: @Lab@)\n\n");
- usage(" -w, --width @WIDTH@\n");
- usage(" -h, --height @HEIGHT@:\n");
- usage(" Generate a @WIDTH@x@HEIGHT@ image (!default!: @as small as possible@)\n\n");
- usage(" -x @X@\n");
- usage(" -y @Y@:\n");
- usage(" Place the first pixel at (@X@, @Y@) (!default!: @center@)\n\n");
- usage(" -a, --animate:\n");
- usage(" Generate frames of an animation\n\n");
- usage(" -o, --output @PATH@:\n");
- usage(" Output a PNG file at @PATH@ (!default!: @kd\\-forest.png@)\n\n");
- usage(" If -a/--animate is specified, this is treated as a directory which\n");
- usage(" will hold many frames\n\n");
- usage(" -e, --seed @SEED@:\n");
- usage(" Seed the random number generator (!default!: @0@)\n\n");
- usage(" -?, --help:\n");
- usage(" Show this message\n");
-#undef usage
-}
-
-bool
-parse_options(options_t *options, int argc, char *argv[])
-{
- // Set defaults
- options->bit_depth = 24;
- options->mode = MODE_HUE_SORT;
- options->stripe = true;
- options->selection = SELECTION_MIN;
- options->color_space = COLOR_SPACE_LAB;
- options->animate = false;
- options->filename = NULL;
- options->seed = 0;
- options->help = false;
-
- bool width_set = false, height_set = false;
- bool x_set = false, y_set = false;
- bool result = true;
-
- for (int i = 1; i < argc; ++i) {
- const char *value;
- bool error = false;
-
- if (parse_arg(argc, argv, "-b", "--bit-depth", &value, &i, &error)) {
- if (!str_to_uint(value, &options->bit_depth)
- || options->bit_depth <= 1
- || options->bit_depth > 24) {
- fprintf(stderr, "Invalid bit depth: `%s'\n", value);
- error = true;
- }
- } else if (parse_arg(argc, argv, "-s", "--hue-sort", NULL, &i, &error)) {
- options->mode = MODE_HUE_SORT;
- } else if (parse_arg(argc, argv, "-r", "--random", NULL, &i, &error)) {
- options->mode = MODE_RANDOM;
- } else if (parse_arg(argc, argv, "-M", "--morton", NULL, &i, &error)) {
- options->mode = MODE_MORTON;
- } else if (parse_arg(argc, argv, "-H", "--hilbert", NULL, &i, &error)) {
- options->mode = MODE_HILBERT;
- } else if (parse_arg(argc, argv, "-t", "--stripe", NULL, &i, &error)) {
- options->stripe = true;
- } else if (parse_arg(argc, argv, "-T", "--no-stripe", NULL, &i, &error)) {
- options->stripe = false;
- } else if (parse_arg(argc, argv, "-l", "--selection", &value, &i, &error)) {
- if (strcmp(value, "min") == 0) {
- options->selection = SELECTION_MIN;
- } else if (strcmp(value, "mean") == 0) {
- options->selection = SELECTION_MEAN;
- } else {
- fprintf(stderr, "Invalid selection mode: `%s'\n", value);
- error = true;
- }
- } else if (parse_arg(argc, argv, "-c", "--color-space", &value, &i, &error)) {
- if (strcmp(value, "RGB") == 0) {
- options->color_space = COLOR_SPACE_RGB;
- } else if (strcmp(value, "Lab") == 0) {
- options->color_space = COLOR_SPACE_LAB;
- } else if (strcmp(value, "Luv") == 0) {
- options->color_space = COLOR_SPACE_LUV;
- } else {
- fprintf(stderr, "Invalid color space: `%s'\n", value);
- error = true;
- }
- } else if (parse_arg(argc, argv, "-w", "--width", &value, &i, &error)) {
- if (str_to_uint(value, &options->width)) {
- width_set = true;
- } else {
- fprintf(stderr, "Invalid width: `%s'\n", value);
- error = true;
- }
- } else if (parse_arg(argc, argv, "-h", "--height", &value, &i, &error)) {
- if (str_to_uint(value, &options->height)) {
- height_set = true;
- } else {
- fprintf(stderr, "Invalid height: `%s'\n", value);
- error = true;
- }
- } else if (parse_arg(argc, argv, "-x", NULL, &value, &i, &error)) {
- if (str_to_uint(value, &options->x)) {
- x_set = true;
- } else {
- fprintf(stderr, "Invalid x coordinate: `%s'\n", value);
- error = true;
- }
- } else if (parse_arg(argc, argv, "-y", NULL, &value, &i, &error)) {
- if (str_to_uint(value, &options->y)) {
- y_set = true;
- } else {
- fprintf(stderr, "Invalid y coordinate: `%s'\n", value);
- error = true;
- }
- } else if (parse_arg(argc, argv, "-a", "--animate", NULL, &i, &error)) {
- options->animate = true;
- } else if (parse_arg(argc, argv, "-o", "--output", &value, &i, &error)) {
- options->filename = value;
- } else if (parse_arg(argc, argv, "-e", "--seed", &value, &i, &error)) {
- if (!str_to_uint(value, &options->seed)) {
- fprintf(stderr, "Invalid random seed: `%s'\n", value);
- error = true;
- }
- } else if (parse_arg(argc, argv, "-?", "--help", NULL, &i, &error)) {
- options->help = true;
- } else if (!error) {
- fprintf(stderr, "Unexpected argument `%s'\n", argv[i]);
- error = true;
- }
-
- if (error) {
- result = false;
- }
- }
-
- options->ncolors = (size_t)1 << options->bit_depth;
-
- if (!width_set && !height_set) {
- // Round width up to make widescreen the default
- options->width = 1U << (options->bit_depth + 1)/2;
- options->height = 1U << options->bit_depth/2;
- } else if (width_set && !height_set) {
- options->height = (options->ncolors + options->width - 1)/options->width;
- } else if (!width_set && height_set) {
- options->width = (options->ncolors + options->height - 1)/options->height;
- }
-
- options->npixels = (size_t)options->width*options->height;
- if (options->npixels < options->ncolors) {
- fprintf(stderr, "Image too small (at least %zu pixels needed)\n", options->ncolors);
- result = false;
- }
-
- if (!x_set) {
- options->x = options->width/2;
- } else if (options->x >= options->width) {
- fprintf(stderr, "-x coordinate too big, should be less than %u\n", options->width);
- result = false;
- }
-
- if (!y_set) {
- options->y = options->height/2;
- } else if (options->y >= options->height) {
- fprintf(stderr, "-y coordinate too big, should be less than %u\n", options->height);
- result = false;
- }
-
- // Default filename depends on -a flag
- if (!options->filename) {
- options->filename = options->animate ? "frames" : "kd-forest.png";
- }
-
- return result;
-}
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