diff options
Diffstat (limited to 'driver.c')
| -rw-r--r-- | driver.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/driver.c b/driver.c new file mode 100644 index 0000000..e308397 --- /dev/null +++ b/driver.c @@ -0,0 +1,184 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "sayeth.h" + +extern size_t START_Y_BOX; +extern size_t START_Y_CARET; +extern size_t START_Y_DATA; +extern const char *A_TAB; +extern char wspace; +extern char box_top_left; +extern char box_top; +extern char box_top_right; +extern char box_side; +extern char box_bottom_left; +extern char box_bottom; +extern char box_bottom_right; + +struct Driver **drivers = NULL; +size_t drivers_alloc = DRIVERS_ALLOC_DEFAULT; +size_t drivers_used = 0; + +struct Driver *driver_load(char *filename) { + FILE *fp = NULL; + struct Driver *driver = NULL; + + driver = calloc(1, sizeof(*driver)); + if (!driver) { + return NULL; + } + + fp = fopen(filename, "r"); + if (!fp) { + return NULL; + } + + for (size_t i = 0; i < 9; i++) { + char buf[INPUT_BUFSIZ] = {0}; + ssize_t lastpos = ftell(fp); + if (fgets(buf, sizeof(buf) - 1, fp) == NULL) { + break; + } + if (!strlen(buf) || buf[0] == '#') { + i--; + continue; + } + buf[strlen(buf) - 1] = '\0'; + switch (i) { + case 0: + driver->name = strdup(buf); + if (!driver->name) { + fclose(fp); + return NULL; + } + break; + case 1: + driver->box_indent = strtol(buf, NULL, 10); + break; + case 2: + driver->box_elements = strdup(buf); + if (!driver->box_elements) { + fclose(fp); + return NULL; + } + break; + case 3: + driver->caret_pos = strtol(buf, NULL, 10); + break; + case 4: + driver->caret_indent = strtol(buf, NULL, 10); + break; + case 5: + driver->caret_attached = strtol(buf, NULL, 10); + break; + case 6: + driver->caret = strdup(buf); + if (!driver->caret) { + fclose(fp); + return NULL; + } + break; + case 7: + driver->data_indent = strtol(buf, 0, 10); + break; + case 8: + driver->data = calloc(DATA_BUFSIZ, sizeof(*driver->data)); + if (!driver->data) { + fclose(fp); + return NULL; + } + // rewind to beginning of the data section + fseek(fp, lastpos, SEEK_SET); + fread(driver->data, 1, DATA_BUFSIZ - 1, fp); + break; + default: + break; + } + } + fclose(fp); + return driver; +} + +int driver_register(struct Driver *driver) { + if (!drivers) { + drivers = calloc(drivers_alloc, sizeof(**drivers)); + } + + if (drivers_used > drivers_alloc) { + struct Driver **tmp; + drivers_alloc += DRIVERS_ALLOC_DEFAULT; + tmp = realloc(drivers, (sizeof(**drivers) * drivers_alloc)); + if (!tmp) { + return -1; + } + drivers = tmp; + + for (size_t i = drivers_used; i < drivers_alloc; i++) { + drivers[i] = calloc(1, sizeof(*drivers[i])); + if (!drivers[i]) + return -2; + } + } + + drivers[drivers_used] = calloc(1, sizeof(*drivers[0])); + if (!drivers[drivers_used]) + return -2; + memcpy(drivers[drivers_used], driver, sizeof(*drivers[0])); + drivers_used++; + return 0; +} + +void drivers_free() { + for (size_t i = 0; i < drivers_alloc; i++) { + if (drivers[i]) { + if (drivers[i]->name) + free(drivers[i]->name); + if (drivers[i]->data) + free(drivers[i]->data); + if (drivers[i]->caret) + free(drivers[i]->caret); + if (drivers[i]->box_elements) + free(drivers[i]->box_elements); + free(drivers[i]); + } + } + free(drivers); +} +void driver_run(struct Driver *driver, char *input) { + char *elem = driver->box_elements; + box_top_left = elem[0]; + box_top = elem[1]; + box_top_right = elem[2]; + box_side = elem[3]; + box_bottom_left = elem[4]; + box_bottom = elem[5]; + box_bottom_right = elem[6]; + START_Y_BOX = driver->box_indent; + START_Y_CARET = driver->caret_indent; + START_Y_DATA = driver->data_indent; + + if (!driver->caret_pos) { + box_printf("%s", input); + caret_draw(driver->caret, START_Y_CARET, driver->caret_attached); + } + + if (driver->data) { + data_draw(driver->data, START_Y_DATA); + } + + if (driver->caret_pos) { + caret_draw(driver->caret, START_Y_CARET, driver->caret_attached); + box_printf("%s", input); + } +} + +struct Driver *driver_lookup(char *name) { + for (size_t i = 0; drivers[i] != NULL; i++) { + if (!strcmp(drivers[i]->name, name)) { + return drivers[i]; + } + } + return NULL; +} + |