diff options
Diffstat (limited to 'buffer.c')
| -rw-r--r-- | buffer.c | 153 |
1 files changed, 84 insertions, 69 deletions
@@ -4,6 +4,8 @@ #include "ted.h" +#include <sys/stat.h> + #define BUFFER_UNTITLED "Untitled" // what to call untitled buffers // this is a macro so we get -Wformat warnings @@ -2455,84 +2457,97 @@ void buffer_new_file(TextBuffer *buffer, const char *path) { bool buffer_save(TextBuffer *buffer) { const Settings *settings = buffer_settings(buffer); - if (buffer_is_named_file(buffer)) { - if (buffer->view_only) { - buffer_error(buffer, "Can't save view-only file."); + if (!buffer_is_named_file(buffer)) { + // user tried to save line buffer. whatever + return true; + } + if (buffer->view_only) { + buffer_error(buffer, "Can't save view-only file."); + return false; + } + char tmp_path[TED_PATH_MAX+10]; + strbuf_printf(tmp_path, "%s.ted-tmp", buffer->path); + if (strlen(tmp_path) != strlen(buffer->path) + 8) { + buffer_error(buffer, "File name too long."); + return false; + } + + + FILE *out = fopen(tmp_path, "wb"); + if (!out) { + buffer_error(buffer, "Couldn't open file %s for writing: %s.", buffer->path, strerror(errno)); + return false; + } + #if __unix__ + // preserve permissions + struct stat statbuf = {0}; + if (stat(buffer->path, &statbuf) == 0) { + mode_t mode = statbuf.st_mode; + if (!(mode & 0222)) { + // we won't be able to write to buffer->path + buffer_error(buffer, "Can't write to %s (file has permissions %04o)", buffer->path, mode); + fclose(out); return false; } - char tmp_path[TED_PATH_MAX+10]; - strbuf_printf(tmp_path, "%s.ted-tmp", buffer->path); - if (strlen(tmp_path) != strlen(buffer->path) + 8) { - buffer_error(buffer, "File name too long."); - return false; + fchmod(fileno(out), mode); + } + #endif + if (settings->auto_add_newline) { + Line *last_line = &buffer->lines[buffer->nlines - 1]; + if (last_line->len) { + // if the last line isn't empty, add a newline to the end of the file + char32_t c = '\n'; + String32 s = {&c, 1}; + buffer_insert_text_at_pos(buffer, buffer_pos_end_of_file(buffer), s); } - - FILE *out = fopen(tmp_path, "wb"); - if (out) { - if (settings->auto_add_newline) { - Line *last_line = &buffer->lines[buffer->nlines - 1]; - if (last_line->len) { - // if the last line isn't empty, add a newline to the end of the file - char32_t c = '\n'; - String32 s = {&c, 1}; - buffer_insert_text_at_pos(buffer, buffer_pos_end_of_file(buffer), s); - } - } - - bool success = true; - - for (u32 i = 0; i < buffer->nlines; ++i) { - Line *line = &buffer->lines[i]; - for (char32_t *p = line->str, *p_end = p + line->len; p != p_end; ++p) { - char utf8[4] = {0}; - size_t bytes = unicode_utf32_to_utf8(utf8, *p); - if (bytes != (size_t)-1) { - if (fwrite(utf8, 1, bytes, out) != bytes) { - buffer_error(buffer, "Couldn't write to %s.", tmp_path); - success = false; - } - } - } - - if (i != buffer->nlines-1) { - putc('\n', out); - } - } - - if (ferror(out)) { - if (!buffer_has_error(buffer)) + } + + bool success = true; + + for (u32 i = 0; i < buffer->nlines; ++i) { + Line *line = &buffer->lines[i]; + for (char32_t *p = line->str, *p_end = p + line->len; p != p_end; ++p) { + char utf8[4] = {0}; + size_t bytes = unicode_utf32_to_utf8(utf8, *p); + if (bytes != (size_t)-1) { + if (fwrite(utf8, 1, bytes, out) != bytes) { buffer_error(buffer, "Couldn't write to %s.", tmp_path); - success = false; - } - if (fclose(out) != 0) { - if (!buffer_has_error(buffer)) - buffer_error(buffer, "Couldn't close file %s.", tmp_path); - success = false; - } - if (success) { - if (os_rename_overwrite(tmp_path, buffer->path) < 0) { - if (!buffer_has_error(buffer)) - buffer_error(buffer, "Couldn't rename %s => %s.", tmp_path, buffer->path); success = false; } } - buffer->last_write_time = timespec_to_seconds(time_last_modified(buffer->path)); - if (success) { - buffer->undo_history_write_pos = arr_len(buffer->undo_history); - if (buffer->path && streq(path_filename(buffer->path), "ted.cfg") - && buffer_settings(buffer)->auto_reload_config) { - ted_load_configs(buffer->ted, true); - } - } - return success; - } else { - buffer_error(buffer, "Couldn't open file %s for writing: %s.", buffer->path, strerror(errno)); - return false; } - } else { - // user tried to save line buffer. whatever - return true; + + if (i != buffer->nlines-1) { + putc('\n', out); + } } + + if (ferror(out)) { + if (!buffer_has_error(buffer)) + buffer_error(buffer, "Couldn't write to %s.", tmp_path); + success = false; + } + if (fclose(out) != 0) { + if (!buffer_has_error(buffer)) + buffer_error(buffer, "Couldn't close file %s.", tmp_path); + success = false; + } + if (success) { + if (os_rename_overwrite(tmp_path, buffer->path) < 0) { + if (!buffer_has_error(buffer)) + buffer_error(buffer, "Couldn't rename %s => %s.", tmp_path, buffer->path); + success = false; + } + } + buffer->last_write_time = timespec_to_seconds(time_last_modified(buffer->path)); + if (success) { + buffer->undo_history_write_pos = arr_len(buffer->undo_history); + if (buffer->path && streq(path_filename(buffer->path), TED_CFG) + && buffer_settings(buffer)->auto_reload_config) { + ted_load_configs(buffer->ted, true); + } + } + return success; } bool buffer_save_as(TextBuffer *buffer, const char *new_path) { |