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#include "command.h"
#include "buffer.h"
#include "buffers.h"
#include "hash.h"
#include "hashmap.h"
#include "minibuffer.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
struct commands command_registry_create(uint32_t capacity) {
struct commands cmds = {0};
HASHMAP_INIT(&cmds.commands, capacity, hash_name);
return cmds;
}
void command_registry_destroy(struct commands *commands) {
HASHMAP_DESTROY(&commands->commands);
}
uint32_t register_command(struct commands *commands, struct command command) {
uint32_t hash = 0;
HASHMAP_INSERT(&commands->commands, struct command_entry, command.name,
command, hash);
return hash;
}
void register_commands(struct commands *command_list, struct command *commands,
uint32_t ncommands) {
for (uint32_t ci = 0; ci < ncommands; ++ci) {
register_command(command_list, commands[ci]);
}
}
struct command *lookup_command(struct commands *command_list,
const char *name) {
HASHMAP_GET(&command_list->commands, struct command_entry, name,
struct command * command);
return command;
}
struct command *lookup_command_by_hash(struct commands *commands,
uint32_t hash) {
HASHMAP_GET_BY_HASH(&commands->commands, struct command_entry, hash,
struct command * command);
return command;
}
int32_t execute_command(struct command *command, struct commands *commands,
struct window *active_window, struct buffers *buffers,
int argc, const char *argv[]) {
return command->fn(
(struct command_ctx){
.buffers = buffers,
.active_window = active_window,
.userdata = command->userdata,
.commands = commands,
.self = command,
.saved_argv = {0},
.saved_argc = 0,
},
argc, argv);
}
void command_ctx_push_arg(struct command_ctx *ctx, const char *argv) {
if (ctx->saved_argc < 64) {
ctx->saved_argv[ctx->saved_argc] = strdup(argv);
++ctx->saved_argc;
}
}
void command_ctx_free(struct command_ctx *ctx) {
for (uint32_t i = 0; i < ctx->saved_argc; ++i) {
free((char *)ctx->saved_argv[i]);
}
ctx->saved_argc = 0;
}
int32_t find_file(struct command_ctx ctx, int argc, const char *argv[]) {
const char *pth = NULL;
if (argc == 0) {
return minibuffer_prompt(ctx, "find file: ");
}
pth = argv[0];
struct stat sb;
if (stat(pth, &sb) < 0 && errno != ENOENT) {
minibuffer_echo("stat on %s failed: %s", pth, strerror(errno));
return 1;
}
if (S_ISDIR(sb.st_mode) && errno != ENOENT) {
minibuffer_echo("TODO: implement dired!");
return 1;
}
window_set_buffer(ctx.active_window,
buffers_add(ctx.buffers, buffer_from_file((char *)pth)));
minibuffer_echo_timeout(4, "buffer \"%s\" loaded",
ctx.active_window->buffer->name);
return 0;
}
int32_t write_file(struct command_ctx ctx, int argc, const char *argv[]) {
const char *pth = NULL;
if (argc == 0) {
return minibuffer_prompt(ctx, "write to file: ");
}
pth = argv[0];
buffer_write_to(ctx.active_window->buffer, pth);
return 0;
}
int32_t run_interactive(struct command_ctx ctx, int argc, const char *argv[]) {
if (argc == 0) {
return minibuffer_prompt(ctx, "execute: ");
}
struct command *cmd = lookup_command(ctx.commands, argv[0]);
if (cmd != NULL) {
return execute_command(cmd, ctx.commands, ctx.active_window, ctx.buffers,
argc - 1, argv + 1);
} else {
minibuffer_echo_timeout(4, "command %s not found", argv[0]);
return 11;
}
}
int32_t do_switch_buffer(struct command_ctx ctx, int argc, const char *argv[]) {
const char *bufname = argv[0];
if (argc == 0) {
// switch back to prev buffer
if (ctx.active_window->prev_buffer != NULL) {
bufname = ctx.active_window->prev_buffer->name;
} else {
return 0;
}
}
struct buffer *buf = buffers_find(ctx.buffers, bufname);
if (buf == NULL) {
minibuffer_echo_timeout(4, "buffer %s not found", bufname);
return 1;
} else {
window_set_buffer(ctx.active_window, buf);
return 0;
}
}
static struct command do_switch_buffer_cmd = {.fn = do_switch_buffer,
.name = "do-switch-buffer"};
int32_t switch_buffer(struct command_ctx ctx, int argc, const char *argv[]) {
if (argc == 0) {
ctx.self = &do_switch_buffer_cmd;
if (ctx.active_window->prev_buffer != NULL) {
return minibuffer_prompt(
ctx, "buffer (default %s): ", ctx.active_window->prev_buffer->name);
} else {
return minibuffer_prompt(ctx, "buffer: ");
}
}
return execute_command(&do_switch_buffer_cmd, ctx.commands, ctx.active_window,
ctx.buffers, argc, argv);
}
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