xcbviewfs,colorlookupgen: implement XPM loading

1 files changed, 51 insertions, 0 deletions

diff --git a/colorlookupgen.c b/colorlookupgen.c
new file mode 100644
index 0000000..6770703
--- /dev/null
+++ b/colorlookupgen.c
@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main(int argc, char **argv) {
+	FILE *file = stdin;
+	char *funcname = "color_lookup";
+	char line[256];
+	char color[256];
+	unsigned int total_colors = 0;
+
+	if (argc >= 2) {
+		file = fopen(argv[1], "r");
+		if (!file) {
+			perror("Error opening rgb.txt");
+			return 1;
+		}
+	}
+
+	if (argc >= 3) {
+		funcname = argv[1];
+	}
+
+	printf("#include <string.h>\n");
+	printf("int %s(char *name, unsigned char color[3]) {\n", funcname);
+	printf(
+		"  static struct {\n"
+		"    char *name;\n"
+		"    unsigned char color[3];\n"
+		"  } colors[] = {\n");
+	while (fgets(line, sizeof(line), file) != NULL) {
+		uint8_t r, g, b;
+		int matches = sscanf(line, "%hhd %hhd %hhd %255[^\n]",
+			&r, &g, &b, color);
+		if (matches == 4) {
+			++total_colors;
+			printf("    { \"%s\", { %d, %d, %d } },\n", color, r, g, b);
+		}
+	}
+	printf(
+		"  };\n"
+		"  int i = 0;\n"
+		"  for (; i<%d; ++i)\n"
+		"    if (!strcasecmp(colors[i].name, name)) {\n"
+		"      memcpy(color, colors[i].color, 3);\n"
+		"      return 1;\n"
+		"    }\n"
+		"  return 0;\n"
+		"}\n", total_colors);
+
+	return 0;
+}