ref: 3cfe7800c7dd02eb17f76b81e2659701ceb49c93
parent: 01cf0c5f98ffae99a85a32457f0310f17b748326
author: ISSOtm <[email protected]>
date: Sat Apr 30 16:37:46 EDT 2022
Make randtilegen and rgbgfx_test compile with MSVC
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,8 +29,18 @@
if(MSVC)
# MSVC's standard library triggers warning C5105,
# "macro expansion producing 'defined' has undefined behavior"
- add_compile_options(/std:c11 /W1 /MP /wd5105)
+ add_compile_options(/MP /wd5105)
add_definitions(/D_CRT_SECURE_NO_WARNINGS)
+ # Also, CMake appears not to pass the C11-enabling flag, so we must add it manually... but only for C!
+ if(NOT CMAKE_C_FLAGS MATCHES "std:c11") # The flag may already have been injected by an earlier CMake invocation, so don't add it twice
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std:c11" CACHE STRING "Flags used by the C compiler during all build types." FORCE)+ endif()
+
+ if(SANITIZERS)
+ set(SAN_FLAGS /fsanitize=address)
+ add_compile_options(${SAN_FLAGS})+ add_link_options(${SAN_FLAGS})+ endif()
else()
add_compile_options(-Wall -pedantic)
add_definitions(-D_POSIX_C_SOURCE=200809L -D_ISOC11_SOURCE)
@@ -41,7 +51,7 @@
-fsanitize=object-size -fsanitize=bool -fsanitize=enum
-fsanitize=alignment -fsanitize=null -fsanitize=address)
add_compile_options(${SAN_FLAGS})- link_libraries(${SAN_FLAGS})+ add_link_options(${SAN_FLAGS})# A non-zero optimization level is desired in debug mode, but allow overriding it nonetheless
# TODO: this overrides anything previously set... that's a bit sloppy!
set(CMAKE_C_FLAGS_DEBUG "-g -Og -fno-omit-frame-pointer -fno-optimize-sibling-calls" CACHE STRING "" FORCE)
--- a/Makefile
+++ b/Makefile
@@ -129,7 +129,7 @@
$Q${CXX} ${REALLDFLAGS} ${PNGLDFLAGS} -o $@ ${rgbgfx_obj} ${REALCXXFLAGS} -x c++ src/version.c ${PNGLDLIBS}test/gfx/randtilegen: test/gfx/randtilegen.c
- $Q${CC} ${REALLDFLAGS} ${PNGLDFLAGS} -o $@ $^ ${REALCFLAGS} -Wno-vla ${PNGCFLAGS} ${PNGLDLIBS}+ $Q${CC} ${REALLDFLAGS} ${PNGLDFLAGS} -o $@ $^ ${REALCFLAGS} ${PNGCFLAGS} ${PNGLDLIBS}test/gfx/rgbgfx_test: test/gfx/rgbgfx_test.cpp
$Q${CXX} ${REALLDFLAGS} ${PNGLDFLAGS} -o $@ $^ ${REALCXXFLAGS} ${PNGLDLIBS}--- a/include/platform.h
+++ b/include/platform.h
@@ -46,12 +46,14 @@
# include <unistd.h>
#endif
-/* MSVC doesn't support `[static N]` for array arguments from C99 */
+/* MSVC doesn't support `[static N]` for array arguments from C99 or C11 */
#ifdef _MSC_VER
# define MIN_NB_ELMS(N)
+# define ARR_QUALS(...)
# define NONNULL(ptr) *ptr
#else
# define MIN_NB_ELMS(N) static (N)
+# define ARR_QUALS(...) __VA_ARGS__
# define NONNULL(ptr) ptr[static 1]
#endif
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,8 +1,5 @@
add_executable(randtilegen gfx/randtilegen.c)
-if(NOT MSVC)
- target_compile_options(randtilegen PRIVATE -Wno-vla)
-endif()
add_executable(rgbgfx_test gfx/rgbgfx_test.cpp)
--- a/test/gfx/randtilegen.c
+++ b/test/gfx/randtilegen.c
@@ -14,7 +14,7 @@
*/
#include <assert.h>
-#include <inttypes.h>
+#include <errno.h>
#include <limits.h>
#include <png.h>
#include <stdint.h>
@@ -22,43 +22,140 @@
#include <stdlib.h>
#include <string.h>
-#include "helpers.h"
+#include "platform.h"
-FILE *rngRecorder; // File to which the random bytes will be read
-uint32_t randBits = 0; // Storage for bits read from the input stream but not yet used
-uint8_t randCount = 0; // How many bits are currently stored in the above
+#define STR(x) #x
+#define XSTR(x) STR(x)
-static uint32_t getRandomBits(uint8_t count) {- // Trying to read one more byte with `randCount` at least this high will drop some bits!
- // If the count is no higher than that limit, then the loop is guaranteed to exit without
- // reading more bytes.
- assert(count <= sizeof(randBits) * 8 + 1);
+struct Attributes {+ unsigned char palette;
+ unsigned char nbColors;
+};
- // Read bytes until we have enough bits to serve the request
- while (count > randCount) {- int data = getchar();
+static unsigned long long randbits = 0;
+static unsigned char randcount = 0;
+
+static _Noreturn void fatal(char const *error) {+ fprintf(stderr, "FATAL: %s\n", error);
+ exit(1);
+}
+
+static FILE *seed;
+
+static unsigned long long getRandomBits(unsigned count) {+ while (count > randcount) {+ // Get new random bytes from stdin (assumed to be a stream of random data) to fulfill the
+ // random bits request
+ int data = getc(seed);
if (data == EOF) {exit(0);
}
- randBits |= (uint32_t)data << randCount;
- randCount += 8;
- fputc(data, rngRecorder);
+ randbits |= (unsigned long long)data << randcount;
+ randcount += 8;
}
-
- uint32_t result = randBits & (((uint32_t)1 << count) - 1);
- randBits >>= count;
- randCount -= count;
+ unsigned long long result = randbits & ((1ull << count) - 1);
+ randbits >>= count;
+ randcount -= count;
return result;
}
-/**
- * Flush any remaining bits in the RNG storage
- */
-static void flushRng(void) {- randCount = 0;
- randBits = 0;
+static void generate_tile_attributes(struct Attributes * restrict attributes) {+ /*
+ * Images have ten colors, grouped into two groups of 5 colors. The palette index indicates two
+ * things: which one of those groups will be used, and which colors out of those 5 will be used
+ * by the tile. The low bit indicates the group, and the rest of the value indicates the subset
+ * of colors. The remainder of the number is treated as a bitfield, where each bit represents a
+ * color: for instance, a value of 13 in the upper bits (binary 01101) indicates that colors 0,
+ * 2 and 3 from that group will be used. Values of 0 and 31 are naturally invalid because they
+ * indicate zero and five colors respectively, and 30 is also excluded to ensure that the
+ * particular subset of colors 1, 2, 3 and 4 never shows up. This guarantees that every tile
+ * will be representable using a palette containing color 0 (since those that don't contain
+ * color 0 will have three colors at most), which in turn ensures that only 4 palettes per group
+ * (and thus 8 total) are needed to cover the image: 0, 1, 2, 3; 0, 1, 2, 4; 0, 1, 3, 4; and 0,
+ * 2, 3, 4. This also implies that making color 0 transparent (in both groups) adds a
+ * transparent color to every palette.
+ */
+ unsigned char pal;
+ do {+ pal = getRandomBits(5);
+ } while (pal == 0 || (pal > 29));
+ attributes->palette = 2 * pal + getRandomBits(1);
+
+ // Use an array to look up the number of colors in the palette; this is faster (and simpler)
+ // than doing a population count over the bits
+ static char const popcount[] = {0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3,+ 4, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4};
+ attributes->nbColors = popcount[pal];
}
+static void generate_tile_data(unsigned char tiledata[ARR_QUALS(restrict) MIN_NB_ELMS(8)][8],
+ unsigned colorcount) {+ switch (colorcount) {+ case 2: // 1bpp
+ for (uint8_t y = 0; y < 8; y++) {+ for (uint8_t x = 0; x < 8; x++) {+ tiledata[y][x] = getRandomBits(1);
+ }
+ }
+ break;
+
+ case 4: // 2bpp
+ for (uint8_t y = 0; y < 8; y++) {+ for (uint8_t x = 0; x < 8; x++) {+ tiledata[y][x] = getRandomBits(2);
+ }
+ }
+ break;
+
+ case 3: // 2bpp with resampling
+ for (uint8_t y = 0; y < 8; y++) {+ for (uint8_t x = 0; x < 8; x++) {+ do {+ tiledata[y][x] = getRandomBits(2);
+ } while (tiledata[y][x] == 3);
+ }
+ }
+ }
+}
+
+// Can't mark as `const`, as the array type is otherwise not compatible (augh)
+static void
+ copy_tile_data(unsigned char destination[ARR_QUALS(restrict) MIN_NB_ELMS(8)][8],
+ unsigned char /* const */ source[ARR_QUALS(restrict) MIN_NB_ELMS(8)][8]) {+ // Apply a random rotation to the copy
+ // coord ^ 7 = inverted coordinate; coord ^ 0 = regular coordinate
+ unsigned xmask = getRandomBits(1) * 7;
+ unsigned ymask = getRandomBits(1) * 7;
+ for (unsigned y = 0; y < 8; y++) {+ for (unsigned x = 0; x < 8; x++) {+ destination[y][x] = source[y ^ ymask][x ^ xmask];
+ }
+ }
+}
+
+static void generate_palettes(uint16_t palettes[ARR_QUALS(restrict) MIN_NB_ELMS(60)][4]) {+ uint16_t colors[10];
+ // Generate 10 random colors (two groups of 5 colors)
+ for (unsigned p = 0; p < 10; p++) {+ colors[p] = getRandomBits(15);
+ }
+ // Potentially make the first color of each group transparent
+ if (!getRandomBits(2)) {+ colors[0] |= 0x8000;
+ colors[5] |= 0x8000;
+ }
+
+ for (unsigned p = 0; p < 60; p++) {+ uint16_t const *group = colors + 5 * (p & 1);
+ uint16_t *palette = palettes[p];
+ for (unsigned index = 0; index < 5; index++) {+ if (p & (2 << index)) {+ *(palette++) = group[index];
+ }
+ }
+ }
+}
+
/**
* Expand a 5-bit color component to 8 bits with minimal bias
*/
@@ -66,15 +163,26 @@
return five << 3 | five >> 2;
}
-struct Attribute {- unsigned char palette;
- unsigned char nbColors;
-};
-#define NB_TILES 10 * 10
-
-static void writePng(png_structp png, png_infop pngInfo, uint8_t width, uint8_t height, uint16_t palettes[][4], struct Attribute const *attributes, uint8_t tileData[][8][8]) {+// Can't mark as `const`, as the array type is otherwise not compatible (augh)
+static void write_image(char const *filename, uint16_t /* const */ palettes[MIN_NB_ELMS(60)][4],
+ unsigned char /* const */ (*tileData)[8][8],
+ struct Attributes const *attributes, uint8_t width, uint8_t height) {uint8_t const nbTiles = width * height;
-
+ png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ png_infop pngInfo = png_create_info_struct(png);
+
+ if (setjmp(png_jmpbuf(png))) {+ fprintf(stderr, "FATAL: An error occurred while writing image \"%s\"", filename);
+ exit(1);
+ }
+
+ FILE *file = fopen(filename, "wb");
+ if (file == NULL) {+ fprintf(stderr, "FATAL: Failed to open \"%s\": %s\n", filename, strerror(errno));
+ exit(1);
+ }
+ png_init_io(png, file);
+
png_set_IHDR(png, pngInfo, width * 8, height * 8, 8, PNG_COLOR_TYPE_RGB_ALPHA,
getRandomBits(1) ? PNG_INTERLACE_NONE : PNG_INTERLACE_ADAM7,
PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
@@ -82,19 +190,24 @@
// While it would be nice to write the image little by little, I really don't want to handle
// interlacing myself. (We're doing interlacing to test that RGBGFX correctly handles it.)
uint8_t const SIZEOF_PIXEL = 4; // Each pixel is 4 bytes (RGBA @ 8 bits/component)
- uint8_t data[height * 8 * width * 8 * SIZEOF_PIXEL];
- uint8_t *rowPtrs[height * 8];
+ assert(width != 0);
+ assert(height != 0);
+ uint8_t *data = malloc(height * 8 * width * 8 * SIZEOF_PIXEL);
+ uint8_t **rowPtrs = malloc(height * 8 * sizeof(*rowPtrs));
+ if (data == NULL || rowPtrs == NULL) {+ fatal("Out of memory");+ }
for (uint8_t y = 0; y < height * 8; ++y) {rowPtrs[y] = &data[y * width * 8 * SIZEOF_PIXEL];
}
for (uint8_t p = 0; p < nbTiles; p++) {- uint8_t tx = 8 * (p % width), ty = 8 * (p / width);
+ uint8_t const tx = 8 * (p % width), ty = 8 * (p / width);
for (uint8_t y = 0; y < 8; y++) {uint8_t * const row = rowPtrs[ty + y];
for (uint8_t x = 0; x < 8; x++) {uint8_t * const pixel = &row[(tx + x) * SIZEOF_PIXEL];
- uint16_t color = palettes[attributes[p].palette][tileData[p][y][x]];
+ uint16_t const color = palettes[attributes[p].palette][tileData[p][y][x]];
pixel[0] = _5to8(color & 0x1F);
pixel[1] = _5to8(color >> 5 & 0x1F);
pixel[2] = _5to8(color >> 10 & 0x1F);
@@ -102,174 +215,106 @@
}
}
}
+
png_set_rows(png, pngInfo, rowPtrs);
png_write_png(png, pngInfo, PNG_TRANSFORM_IDENTITY, NULL);
+ fclose(file);
+ free(rowPtrs);
+ free(data);
+ png_destroy_write_struct(&png, &pngInfo);
}
-static void generate_random_image(png_structp png, png_infop pngInfo) {- struct Attribute attributes[NB_TILES];
- uint8_t tileData[NB_TILES][8][8];
- // These two are in tiles, not pixels, and in range [3; 10], hence `NB_TILES` above
- // Both width and height are 4-bit values, so nbTiles is 8-bit (OK!)
- uint8_t const width = getRandomBits(3) + 3, height = getRandomBits(3) + 3,
- nbTiles = width * height;
-
- for (uint8_t p = 0; p < nbTiles; p++) {- uint8_t pal;
- do {- pal = getRandomBits(5);
- } while (pal == 0 || (pal > 29));
- attributes[p].palette = 2 * pal + getRandomBits(1);
- // Population count (nb of bits set), the simple way
- static uint8_t const popcount[] = {1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,- 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4};
- attributes[p].nbColors = popcount[pal - 1];
- // Handle single-color tiles the simple way, without trying to pull more random bits
- if (attributes[p].nbColors < 2) {- memset(tileData[p], 0, sizeof(tileData[p]));
+static void generate_random_image(char const *filename) {+#define MIN_TILES_PER_SIDE 3
+#define MAX_TILES ((MIN_TILES_PER_SIDE + 7) * (MIN_TILES_PER_SIDE + 7))
+ struct Attributes attributes[MAX_TILES];
+ unsigned char tileData[MAX_TILES][8][8];
+ uint8_t width = getRandomBits(3) + MIN_TILES_PER_SIDE,
+ height = getRandomBits(3) + MIN_TILES_PER_SIDE;
+ for (uint8_t tile = 0; tile < (width * height); tile++) {+ generate_tile_attributes(attributes + tile);
+ // If a tile contains only one color, then there's no tile data to generate: all pixels will
+ // use color 0
+ if (attributes[tile].nbColors < 2) {+ memset(tileData[tile], 0, sizeof(tileData[tile]));
continue;
}
- uint8_t index, total;
- for (index = 0, total = 0; index < p; index++) {- if (attributes[index].nbColors == attributes[p].nbColors) {+
+ // Find tiles with the same number of colors
+ unsigned index = 0, total = 0;
+ for (; index < tile; index++) {+ if (attributes[index].nbColors == attributes[tile].nbColors) {total++;
}
}
- // index == p at exit
+ assert(index == tile); // This is used as a sentinel later on to indicate no tile was found
+
if (total) {+ // If there are such tiles, there's a random chance that this tile will replicate one of
+ // those tiles (potentially rotated)
index = getRandomBits(8);
if (index < total) {total = index + 1;
for (index = 0; total; index++) {- if (attributes[index].nbColors == attributes[p].nbColors) {+ if (attributes[index].nbColors == attributes[tile].nbColors) {total--;
}
- if (!total) {- index--;
- }
}
+ if (total == 0) {+ index--;
+ }
} else {- index = p;
+ index = tile; // Restore the sentinel
}
}
- if (index != p) {- unsigned rotation = getRandomBits(2);
- for (uint8_t y = 0; y < 8; y++) {- for (uint8_t x = 0; x < 8; x++) {- tileData[p][y][x] =
- tileData[index][y ^ ((rotation & 2) ? 7 : 0)][x ^ ((rotation & 1) ? 7 : 0)];
- }
- }
+
+ if (index == tile) {+ generate_tile_data(tileData[tile], attributes[index].nbColors);
} else {- switch (attributes[p].nbColors) {- case 2: // Two-color tiles only need one random bit per pixel
- for (uint8_t y = 0; y < 8; y++)
- for (uint8_t x = 0; x < 8; x++)
- tileData[p][y][x] = getRandomBits(1);
- break;
- case 4: // 4-color tiles can use two random bits per pixel
- for (uint8_t y = 0; y < 8; y++)
- for (uint8_t x = 0; x < 8; x++)
- tileData[p][y][x] = getRandomBits(2);
- break;
- case 3: // 3-color tiles must draw two random bits, but reject them if out of range
- for (uint8_t y = 0; y < 8; y++) {- for (uint8_t x = 0; x < 8; x++) {- do {- index = getRandomBits(2);
- } while (index == 3);
- tileData[p][y][x] = index;
- }
- }
- break;
- default: // 1-color tiles were handled earlier
- unreachable_();
- }
+ copy_tile_data(tileData[tile], tileData[index]);
}
}
- uint16_t colors[10];
- for (uint8_t p = 0; p < 10; p++) {- colors[p] = getRandomBits(15);
- }
- // Randomly make color #0 of all palettes transparent
- if (!getRandomBits(2)) {- colors[0] |= 0x8000;
- colors[5] |= 0x8000;
- }
-
uint16_t palettes[60][4];
- for (uint8_t p = 0; p < 60; p++) {- uint16_t const *subpal = &colors[p & 1 ? 5 : 0];
- uint8_t total = 0;
- for (uint8_t index = 0; index < 5; index++) {- if (p & (2 << index)) {- palettes[p][total++] = subpal[index];
- }
- }
- }
-
- writePng(png, pngInfo, width, height, palettes, attributes, tileData);
+ generate_palettes(palettes);
+ write_image(filename, palettes, tileData, attributes, width, height);
}
int main(int argc, char **argv) {- if (argc < 2) {- fputs("usage: randtilegen <basename> [<basename> [...]]\n", stderr);+ if (argc < 3 || argc > 4) {+ fprintf(stderr, "usage: %s <input file> <basename> [<maxcount>]\n", argv[0]);
return 2;
}
- size_t maxBasenameLen = 0;
- for (int index = 1; index < argc; index++) {- size_t length = strlen(argv[index]);
- if (length > maxBasenameLen) {- maxBasenameLen = length;
- }
+ seed = fopen(argv[1], "rb");
+ if (!seed) {+ fprintf(stderr, "FATAL: Cannot open seed file (%s)\n", strerror(errno));
+ return 1;
}
- char filename[maxBasenameLen + sizeof("65535.png")];- for (uint16_t i = 0;; i++) { // 65k images ought to be enough- for (int index = 1; index < argc; index++) {- int len = sprintf(filename, "%s%" PRIu16 ".rng", argv[index], i);
- rngRecorder = fopen(filename, "wb");
- if (!rngRecorder) {- perror(filename);
- return 1;
- }
-
- filename[len - 3] = 'p'; // `.rng` -> `.png`
- FILE *img = fopen(filename, "wb");
- if (!img) {- perror(filename);
- return 1;
- }
- png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
- if (!png) {- perror("png_create_write_struct");- return 1;
- }
- png_infop pngInfo = png_create_info_struct(png);
- if (!pngInfo) {- perror("png_create_info_struct");- return 1;
- }
- if (setjmp(png_jmpbuf(png))) {- fprintf(stderr, "FATAL: an error occurred while writing image \"%s\"\n", filename);
- return 1;
- }
-
- // Ensure that image generation starts on byte boundaries
- // (This is necessary so that all involved random bits are recorded in the `.rng` file)
- flushRng();
-
- png_init_io(png, img);
- generate_random_image(png, pngInfo);
- png_destroy_write_struct(&png, &pngInfo);
- fclose(img);
- fclose(rngRecorder);
+ size_t const nameLen = strlen(argv[2]);
+ unsigned long long maxcount = ULLONG_MAX;
+ if (argc > 3) {+ char *error;
+ maxcount = strtoull(argv[3], &error, 0);
+ if (*error != '\0') {+ fatal("invalid count");}
+ }
- if (i == UINT16_MAX) {- break;
- }
+ char *filename = malloc(nameLen + sizeof(XSTR(ULLONG_MAX) ".png"));
+ if (!filename) {+ fatal("out of memory");}
+ memcpy(filename, argv[2], nameLen);
+
+ for (unsigned long long count = 0; count < maxcount; count++) {+ sprintf(&filename[nameLen], "%llu.png", count);
+ generate_random_image(filename);
+ // Reset the global random state so that subsequent images don't share a random byte
+ randbits = 0;
+ randcount = 0;
+ }
+
+ return 0;
}
--- a/test/gfx/rgbgfx_test.cpp
+++ b/test/gfx/rgbgfx_test.cpp
@@ -1,6 +1,19 @@
-#include <sys/stat.h>
-#include <sys/wait.h>
+// For `execProg` (Windows is its special little snowflake again)
+#ifndef _MSC_VER
+ #include <sys/stat.h>
+ #include <sys/wait.h>
+
+ #include <spawn.h>
+ #include <unistd.h>
+#else
+ #define WIN32_LEAN_AND_MEAN // Include less from `windows.h` to avoid conflicts
+ #include <windows.h>
+ #include <errhandlingapi.h>
+ #include <processthreadsapi.h>
+ #undef max // This macro conflicts with `std::numeric_limits<...>::max()`
+#endif
+
#include <algorithm>
#include <array>
#include <cassert>
@@ -10,11 +23,10 @@
#include <limits>
#include <memory>
#include <png.h>
-#include <spawn.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
+#include <string>
#include <vector>
#include "defaultinitalloc.hpp"
@@ -267,12 +279,12 @@
~Png() { png_destroy_read_struct(&png, &info, nullptr); }};
-static int execProg(char const *name, char * const *argv,
- posix_spawn_file_actions_t const *actions = nullptr) {+static char *execProg(char const *name, char * const *argv) {+#ifndef _MSC_VER
pid_t pid;
- int err = posix_spawn(&pid, argv[0], actions, nullptr, argv, nullptr);
+ int err = posix_spawn(&pid, argv[0], nullptr, nullptr, argv, nullptr);
if (err != 0) {- return err;
+ return strerror(err);
}
siginfo_t info;
@@ -286,7 +298,74 @@
fatal("%s returned with status %d", name, info.si_status);}
- return 0;
+#else /* defined(_MSC_VER) */
+
+ auto winStrerror = [](DWORD errnum) {+ LPTSTR buf;
+ if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM
+ | FORMAT_MESSAGE_MAX_WIDTH_MASK,
+ nullptr, errnum, 0, (LPTSTR)&buf, 0, nullptr)
+ == 0) {+ fatal("Failed to get error message for error 0x%x", errnum);+ }
+ return buf;
+ };
+
+ char cmdLine[32768]; // Max command line size on Windows
+ char *ptr = cmdLine;
+ for (size_t i = 0; argv[i]; ++i) {+ char const *src = argv[i];
+ // I miss you, `stpcpy`
+ while (*src) {+ *ptr++ = *src++;
+ }
+ *ptr++ = ' ';
+ }
+ *ptr = '\0';
+
+ STARTUPINFOA startupInfo;
+ GetStartupInfoA(&startupInfo);
+ STARTUPINFOA childStartupInfo{sizeof(startupInfo),+ nullptr,
+ nullptr,
+ nullptr,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ nullptr,
+ 0,
+ 0,
+ 0};
+
+ PROCESS_INFORMATION child;
+ if (CreateProcessA(nullptr, cmdLine, nullptr, nullptr, true, 0, nullptr, nullptr,
+ &childStartupInfo, &child)
+ == 0) {+ return winStrerror(GetLastError());
+ }
+
+ DWORD status;
+ do {+ if (GetExitCodeProcess(child.hProcess, &status) == 0) {+ fatal("Error waiting for %s: %ls", name, winStrerror(GetLastError()));+ }
+ } while (status == STILL_ACTIVE);
+ CloseHandle(child.hProcess);
+ CloseHandle(child.hThread);
+
+ if (status != 0) {+ fatal("%s returned with status %ld", name, status);+ }
+#endif
+
+ return nullptr;
}
int main(int argc, char **argv) {@@ -296,20 +375,13 @@
}
{- posix_spawn_file_actions_t action;
- // Putting these directly in the array makes them const or something.
char path[] = "./randtilegen", file[] = "out";
- char *args[] = {path, file, nullptr};+ char *args[] = {path, argv[1], file, nullptr};- posix_spawn_file_actions_init(&action);
- posix_spawn_file_actions_addopen(&action, 0, argv[1], O_RDONLY, 0);
-
- if (int ret = execProg("randtilegen", args, &action); ret != 0) {+ if (auto ret = execProg("randtilegen", args); ret != nullptr) { fatal("Failed to excute ./randtilegen (%s). Is it in the current working directory?",- strerror(ret));
+ ret);
}
-
- posix_spawn_file_actions_destroy(&action);
}
{@@ -321,9 +393,8 @@
// Also copy the trailing `nullptr`
std::copy_n(&argv[2], argc - 1, std::back_inserter(args));
- if (int ret = execProg("rgbgfx conversion", args.data()); ret != 0) {- fatal("Failed to execute ../../rgbgfx (%s). Is it in the parent directory?",- strerror(ret));
+ if (auto ret = execProg("rgbgfx conversion", args.data()); ret != nullptr) {+ fatal("Failed to execute ../../rgbgfx (%s). Is it in the parent directory?", ret);}
}
@@ -340,8 +411,8 @@
// Also copy the trailing `nullptr`
std::copy_n(&argv[2], argc - 1, std::back_inserter(args));
- if (int ret = execProg("rgbgfx reversal", args.data()); ret != 0) {- fatal("Failed to execute ../../rgbgfx -r (%s)", strerror(ret));+ if (auto ret = execProg("rgbgfx reversal", args.data()); ret != nullptr) {+ fatal("Failed to execute ../../rgbgfx -r (%s)", ret);}
}