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More code cleanup, including tweaking matches_cmd() to figure out if

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there are required arguments or not, and refactoring run_bbcmd() to no
longer return a value (which was ignored), but instead just spit out error messages to
stderr if necessary.
This commit is contained in:
Bruce Hill 2019-10-13 19:34:16 -07:00
parent d77907783f
commit 55daca6a2f
2 changed files with 54 additions and 55 deletions
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97
bb.c
View File

@ -27,8 +27,8 @@ void bb_browse(bb_t *bb, const char *path)
bb->scroll = 0;
bb->cursor = 0;
bb->dirty = 0;
bb->should_quit = 0;
init_term();
goto force_check_cmds;
while (!bb->should_quit) {
@ -400,11 +400,13 @@ entry_t* load_entry(bb_t *bb, const char *path, int clear_dots)
/*
* Return whether a string matches a command
* e.g. matches_cmd("cd:..", "cd") == 1, matches_cmd("q", "quit") == 1
* e.g. matches_cmd("sel:x", "select:") == 1, matches_cmd("q", "quit") == 1
*/
static inline int matches_cmd(const char *str, const char *cmd)
{
while (*str == *cmd && *cmd) ++str, ++cmd;
if ((strchr(cmd, ':') == NULL) != (strchr(str, ':') == NULL))
return 0;
while (*str == *cmd && *cmd && *cmd != ':') ++str, ++cmd;
return *str == '\0' || *str == ':';
}
@ -568,7 +570,7 @@ void print_bindings(int fd)
* Run a bb internal command (e.g. "+refresh") and return an indicator of what
* needs to happen next.
*/
bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
void run_bbcmd(bb_t *bb, const char *cmd)
{
if (cmd[0] == '+') ++cmd;
else if (strncmp(cmd, "bb +", 4) == 0) cmd = &cmd[4];
@ -581,14 +583,15 @@ bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
} else if (matches_cmd(cmd, ".")) { // +.
set_bool(bb->show_dot);
populate_files(bb, 1);
} else if (matches_cmd(cmd, "bind")) { // +bind:<keys>:<script>
if (!value || !value[0])
return BB_INVALID;
} else if (matches_cmd(cmd, "bind:")) { // +bind:<keys>:<script>
char *value_copy = memcheck(strdup(value));
char *keys = trim(value_copy);
if (!keys[0]) { free(value_copy); return BB_OK; }
if (!keys[0]) { free(value_copy); return; }
char *script = strchr(keys+1, ':');
if (!script) { free(value_copy); return BB_INVALID; }
if (!script) {
free(value_copy);
goto invalid_cmd;
}
*script = '\0';
script = trim(script + 1);
char *description;
@ -617,25 +620,18 @@ bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
}
}
free(value_copy);
} else if (matches_cmd(cmd, "cd")) { // +cd:
if (!value) return BB_INVALID;
if (cd_to(bb, value)) return BB_INVALID;
} else if (matches_cmd(cmd, "columns")) { // +columns:
if (!value) return BB_INVALID;
} else if (matches_cmd(cmd, "cd:")) { // +cd:
if (cd_to(bb, value)) goto invalid_cmd;
} else if (matches_cmd(cmd, "columns:")) { // +columns:
strncpy(bb->columns, value, MAX_COLS);
bb->dirty = 1;
} else if (matches_cmd(cmd, "deselect")) { // +deselect
if (!value) {
while (bb->firstselected)
set_selected(bb, bb->firstselected, 0);
return BB_OK;
}
} else if (matches_cmd(cmd, "deselect:")) { // +deselect
char pbuf[PATH_MAX];
normalize_path(bb->path, value, pbuf, 1);
entry_t *e = load_entry(bb, pbuf, 0);
if (e) {
set_selected(bb, e, 0);
return BB_OK;
return;
}
// Filename may no longer exist:
for (e = bb->firstselected; e; e = e->selected.next) {
@ -644,28 +640,30 @@ bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
break;
}
}
} else if (matches_cmd(cmd, "dotfiles")) { // +dotfiles:
} else if (matches_cmd(cmd, "deselect")) { // +deselect
while (bb->firstselected)
set_selected(bb, bb->firstselected, 0);
return;
} else if (matches_cmd(cmd, "dotfiles:") || matches_cmd(cmd, "dotfiles")) { // +dotfiles:
set_bool(bb->show_dotfiles);
populate_files(bb, 1);
} else if (matches_cmd(cmd, "execute")) { // +execute:
if (!value || !value[0]) return BB_INVALID;
} else if (matches_cmd(cmd, "execute:")) { // +execute:
move_cursor(tty_out, 0, termheight-1);
fputs(T_ON(T_SHOW_CURSOR), tty_out);
restore_term(&default_termios);
run_script(bb, value);
init_term();
} else if (matches_cmd(cmd, "goto")) { // +goto:
if (!value) return BB_INVALID;
} else if (matches_cmd(cmd, "goto:")) { // +goto:
entry_t *e = load_entry(bb, value, 1);
if (!e) return BB_INVALID;
if (!e) goto invalid_cmd;
if (IS_VIEWED(e)) {
set_cursor(bb, e->index);
return BB_OK;
return;
}
char pbuf[PATH_MAX];
strcpy(pbuf, e->fullname);
char *lastslash = strrchr(pbuf, '/');
if (!lastslash) return BB_INVALID;
if (!lastslash) err("No slash found in filename: %s", pbuf);
*lastslash = '\0'; // Split in two
cd_to(bb, pbuf);
if (IS_VIEWED(e))
@ -691,16 +689,15 @@ bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
init_term();
signal(SIGINT, old_handler);
bb->dirty = 1;
} else if (matches_cmd(cmd, "interleave")) { // +interleave
} else if (matches_cmd(cmd, "interleave:") || matches_cmd(cmd, "interleave")) { // +interleave
set_bool(bb->interleave_dirs);
sort_files(bb);
} else if (matches_cmd(cmd, "kill")) { // +kill
exit(1);
} else if (matches_cmd(cmd, "move")) { // +move:
exit(EXIT_FAILURE);
} else if (matches_cmd(cmd, "move:")) { // +move:
int oldcur, isdelta, n;
move:
if (!value) return BB_INVALID;
if (!bb->nfiles) return BB_INVALID;
if (bb->nfiles == 0) return;
oldcur = bb->cursor;
isdelta = value[0] == '-' || value[0] == '+';
n = (int)strtol(value, (char**)&value, 10);
@ -708,7 +705,7 @@ bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
n = (n * (value[1] == 'n' ? bb->nfiles : termheight)) / 100;
if (isdelta) set_cursor(bb, bb->cursor + n);
else set_cursor(bb, n);
if (matches_cmd(cmd, "spread")) { // +spread:
if (matches_cmd(cmd, "spread:")) { // +spread:
int sel = IS_SELECTED(bb->files[oldcur]);
for (int i = bb->cursor; i != oldcur; i += (oldcur > i ? 1 : -1))
set_selected(bb, bb->files[i], sel);
@ -717,8 +714,7 @@ bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
bb->should_quit = 1;
} else if (matches_cmd(cmd, "refresh")) { // +refresh
populate_files(bb, 1);
} else if (matches_cmd(cmd, "scroll")) { // +scroll:
if (!value) return BB_INVALID;
} else if (matches_cmd(cmd, "scroll:")) { // +scroll:
// TODO: figure out the best version of this
int isdelta = value[0] == '+' || value[0] == '-';
int n = (int)strtol(value, (char**)&value, 10);
@ -728,16 +724,15 @@ bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
set_scroll(bb, bb->scroll + n);
else
set_scroll(bb, n);
} else if (matches_cmd(cmd, "select")) { // +select:
if (!value && !bb->nfiles) return BB_INVALID;
} else if (matches_cmd(cmd, "select:") || matches_cmd(cmd, "select")) { // +select:
if (!value && !bb->nfiles) return;
if (!value) value = bb->files[bb->cursor]->fullname;
entry_t *e = load_entry(bb, value, 1);
if (e) set_selected(bb, e, 1);
} else if (matches_cmd(cmd, "sort")) { // +sort:
if (!value) return BB_INVALID;
} else if (matches_cmd(cmd, "sort:")) { // +sort:
set_sort(bb, value);
sort_files(bb);
} else if (matches_cmd(cmd, "spread")) { // +spread:
} else if (matches_cmd(cmd, "spread:")) { // +spread:
goto move;
} else if (matches_cmd(cmd, "suspend")) { // +suspend
fputs(T_LEAVE_BBMODE, tty_out);
@ -745,22 +740,20 @@ bb_result_t run_bbcmd(bb_t *bb, const char *cmd)
raise(SIGTSTP);
init_term();
bb->dirty = 1;
} else if (matches_cmd(cmd, "toggle")) { // +toggle
if (!value && !bb->nfiles) return BB_INVALID;
} else if (matches_cmd(cmd, "toggle:") || matches_cmd(cmd, "toggle")) { // +toggle
if (!value && !bb->nfiles) return;
if (!value) value = bb->files[bb->cursor]->fullname;
entry_t *e = load_entry(bb, value, 1);
if (e) set_selected(bb, e, !IS_SELECTED(e));
if (!e) goto invalid_cmd;
set_selected(bb, e, !IS_SELECTED(e));
} else {
invalid_cmd:
fputs(T_LEAVE_BBMODE, tty_out);
restore_term(&orig_termios);
const char *msg = "Invalid bb command: ";
write(STDERR_FILENO, msg, strlen(msg));
write(STDERR_FILENO, cmd, strlen(cmd));
write(STDERR_FILENO, "\n", 1);
fprintf(stderr, "Invalid bb command: %s", cmd);
fprintf(stderr, "\n");
init_term();
return BB_INVALID;
}
return BB_OK;
}
/*
@ -1297,8 +1290,8 @@ int main(int argc, char *argv[])
cmdfd = -1;
}
init_term();
bb_browse(bb, path);
if (tty_out) {
fputs(T_LEAVE_BBMODE, tty_out);
cleanup();

12
bb.h
View File

@ -61,6 +61,14 @@
exit(EXIT_FAILURE); \
} while (0)
#define warn(...) do { \
fputs(T_LEAVE_BBMODE, tty_out); \
restore_term(&orig_termios); \
fprintf(stderr, __VA_ARGS__); \
fprintf(stderr, "\n"); \
init_term(); \
} while (0)
// Types:
typedef struct {
int key;
@ -129,8 +137,6 @@ typedef struct bb_s {
unsigned int should_quit : 1;
} bb_t;
typedef enum { BB_OK = 0, BB_INVALID } bb_result_t;
// Configurable options:
#define SCROLLOFF MIN(5, (termheight-4)/2)
#define CMDFILE_FORMAT "/tmp/bb.XXXXXX"
@ -182,7 +188,7 @@ static void* memcheck(void *p);
static void normalize_path(const char *root, const char *path, char *pbuf, int clear_dots);
static void populate_files(bb_t *bb, int samedir);
static void print_bindings(int fd);
static bb_result_t run_bbcmd(bb_t *bb, const char *cmd);
static void run_bbcmd(bb_t *bb, const char *cmd);
static void render(bb_t *bb);
static void restore_term(const struct termios *term);
static int run_script(bb_t *bb, const char *cmd);