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// this is a macro so we get -Wformat warnings
#define ted_seterr(buffer, ...) \
snprintf(ted->error, sizeof ted->error - 1, __VA_ARGS__)
void ted_seterr_to_buferr(Ted *ted, TextBuffer *buffer) {
size_t size = sizeof ted->error;
if (sizeof buffer->error < size) size = sizeof buffer->error;
memcpy(ted->error, buffer->error, size);
}
bool ted_haserr(Ted *ted) {
return ted->error[0] != '\0';
}
char const *ted_geterr(Ted *ted) {
return ted->error;
}
void ted_clearerr(Ted *ted) {
ted->error[0] = '\0';
}
static void ted_out_of_mem(Ted *ted) {
ted_seterr(ted, "Out of memory.");
}
static void *ted_malloc(Ted *ted, size_t size) {
void *ret = malloc(size);
if (!ret) ted_out_of_mem(ted);
return ret;
}
static void *ted_calloc(Ted *ted, size_t n, size_t size) {
void *ret = calloc(n, size);
if (!ret) ted_out_of_mem(ted);
return ret;
}
static void *ted_realloc(Ted *ted, void *p, size_t new_size) {
void *ret = realloc(p, new_size);
if (!ret) ted_out_of_mem(ted);
return ret;
}
// Check the various places a file could be, and return the full path.
static Status ted_get_file(Ted const *ted, char const *name, char *out, size_t outsz) {
if (ted->search_cwd && fs_file_exists(name)) {
// check in current working directory
str_cpy(out, outsz, name);
return true;
}
if (*ted->local_data_dir) {
str_printf(out, outsz, "%s" PATH_SEPARATOR_STR "%s", ted->local_data_dir, name);
if (fs_file_exists(out))
return true;
}
if (*ted->global_data_dir) {
str_printf(out, outsz, "%s" PATH_SEPARATOR_STR "%s", ted->global_data_dir, name);
if (fs_file_exists(out))
return true;
}
return false;
}
// Loads font from filename into *out, freeing any font that was previously there.
// *out is left unchanged on failure.
static void ted_load_font(Ted *ted, char const *filename, Font **out) {
char font_filename[TED_PATH_MAX];
if (ted_get_file(ted, filename, font_filename, sizeof font_filename)) {
Font *font = text_font_load(font_filename, ted->settings.text_size);
if (font) {
if (*out) {
text_font_free(*out);
}
*out = font;
} else {
ted_seterr(ted, "Couldn't load font: %s", text_get_err());
text_clear_err();
}
} else {
ted_seterr(ted, "Couldn't find font file. There is probably a problem with your ted installation.");
}
}
// Load all the fonts ted will use.
static void ted_load_fonts(Ted *ted) {
ted_load_font(ted, "assets/font.ttf", &ted->font);
ted_load_font(ted, "assets/font-bold.ttf", &ted->font_bold);
}
// returns the index of an available buffer, or -1 if none are available
static i32 ted_new_buffer(Ted *ted) {
bool *buffers_used = ted->buffers_used;
for (i32 i = 0; i < TED_MAX_BUFFERS; ++i) {
if (!buffers_used[i]) {
buffers_used[i] = true;
buffer_create(&ted->buffers[i], ted);
return i;
}
}
return -1;
}
// Opposite of ted_new_buffer
// Make sure you set active_buffer to something else if you delete it!
static void ted_delete_buffer(Ted *ted, u16 index) {
TextBuffer *buffer = &ted->buffers[index];
if (buffer == ted->active_buffer)
ted->active_buffer = NULL; // make sure we don't set the active buffer to something invalid
buffer_free(buffer);
ted->buffers_used[index] = false;
}
// Returns the index of an available node, or -1 if none are available
static i32 ted_new_node(Ted *ted) {
bool *nodes_used = ted->nodes_used;
for (i32 i = 0; i < TED_MAX_NODES; ++i) {
if (!nodes_used[i]) {
nodes_used[i] = true;
return i;
}
}
ted_seterr(ted, "Too many nodes.");
return -1;
}
static void node_tab_close(Ted *ted, Node *node, u16 index);
// Open a new buffer. Fills out *tab to the index of the tab used, and *buffer_idx to the index of the buffer.
// Returns true on success.
static Status ted_open_buffer(Ted *ted, u16 *buffer_idx, u16 *tab) {
i32 new_buffer_index = ted_new_buffer(ted);
if (new_buffer_index >= 0) {
Node *node = ted->active_node;
if (!node) {
// no active node; let's create one!
i32 node_idx = ted_new_node(ted);
if (node_idx >= 0) {
node = &ted->nodes[node_idx];
ted->active_node = node;
} else {
ted_delete_buffer(ted, (u16)new_buffer_index);
return false;
}
}
if (arr_len(node->tabs) < TED_MAX_TABS) {
arr_add(node->tabs, (u16)new_buffer_index);
TextBuffer *new_buffer = &ted->buffers[new_buffer_index];
ted->active_buffer = new_buffer;
node->active_tab = (u16)(arr_len(node->tabs) - 1);
*buffer_idx = (u16)new_buffer_index;
*tab = node->active_tab;
return true;
} else {
ted_seterr(ted, "Too many tabs.");
ted_delete_buffer(ted, (u16)new_buffer_index);
return false;
}
} else {
return false;
}
}
// Returns true on success
static bool ted_open_file(Ted *ted, char const *filename) {
u16 buffer_idx, tab_idx;
if (ted_open_buffer(ted, &buffer_idx, &tab_idx)) {
TextBuffer *buffer = &ted->buffers[buffer_idx];
if (buffer_load_file(buffer, filename)) {
return true;
} else {
node_tab_close(ted, ted->active_node, tab_idx);
ted_delete_buffer(ted, (u16)buffer_idx);
return false;
}
} else {
return false;
}
}
static bool ted_new_file(Ted *ted) {
u16 buffer_idx, tab_idx;
if (ted_open_buffer(ted, &buffer_idx, &tab_idx)) {
TextBuffer *buffer = &ted->buffers[buffer_idx];
buffer_new_file(buffer, TED_UNTITLED);
if (!buffer_haserr(buffer)) {
return true;
} else {
node_tab_close(ted, ted->active_node, tab_idx);
ted_delete_buffer(ted, (u16)buffer_idx);
return false;
}
} else {
return false;
}
}
static void menu_open(Ted *ted, Menu menu);
static void menu_escape(Ted *ted);
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