86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
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#include <toml.h>
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#include "util.h"
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#include "font.h"
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font_t font_create(char *name, char *filename) {
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FILE *fp;
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font_t font;
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printf("Processing %s...\n", name);
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fp = fopen(filename, "r");
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if (!fp) {
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char errbuf[200];
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snprintf(errbuf, 200, "can't open %s: ", filename);
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error(errbuf, strerror(errno));
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}
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toml_table_t *table = toml_parse_file(fp);
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fclose(fp);
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#define TOML_GET_KEY((var, key, func)) toml_datum_t *(var) = func(table, key);\
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if (!var.ok) {\
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error("key '" key "' missing from", filename); \
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}
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TOML_GET_KEY(name, "name", toml_string_in)
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TOML_GET_KEY(image_filename, "filename", toml_string_in)
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TOML_GET_KEY(bpp, "bits_per_pixel", toml_int_in)
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TOML_GET_KEY(width, "width", toml_int_in)
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TOML_GET_KEY(height, "height", toml_int_in)
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#undef TOML_GET_KEY
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toml_table_t *mapping = toml_table_in(table, "map")
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if (!mapping.ok) {
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error("map missing for font ", font);
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}
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font.name = name.u.s;
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font.filename = image_filename.u.s;
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font.bits_per_pixel = bpp;
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font.width = width;
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font.height = height;
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font.map_entries = map_create(mapping, *map);
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return font;
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}
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unsigned int map_create(toml_table_t *table, map_t **map) {
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map_t *node;
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map_t *next;
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unsigned int nodes;
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map_t *root = malloc(sizeof(map_t*));
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toml_array_t *space = toml_array_in(table, " ");
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toml_datum_t spcidx = toml_int_at(space, 0);
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toml_datum_t spcwid = toml_int_at(space, 1);
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if (!spcidx.ok) {
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error("missing or inappropriate index for glyph: ", key);
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}
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if (!spcwid.ok) {
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error("missing or inappropriate index for glyph: ", key);
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}
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node = root;
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for (nodes = 1; ; nodes++) {
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char *key = toml_key_in(table, nodes);
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if (!key) break;
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toml_array_t *val = toml_array_in(table, key);
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toml_datum_t index = toml_int_at(val, 0);
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toml_datum_t width = toml_int_at(val, 1);
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if (!index.ok) {
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error("missing or inappropriate index for glyph: ", key);
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}
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if (!width.ok) {
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error("missing or inappropriate width for glyph: ", key);
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}
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next = malloc(sizeof(map_t *));
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next->glyph = key;
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next->index = index.u.i;
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next->width = width.u.i;
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node->next = next;
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node = next;
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}
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}
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