diff options
| -rw-r--r-- | editors/vi.c | 236 |
1 files changed, 120 insertions, 116 deletions
diff --git a/editors/vi.c b/editors/vi.c index a978e0f..24a9f60 100644 --- a/editors/vi.c +++ b/editors/vi.c @@ -491,7 +491,6 @@ struct globals { } while (0) -static int init_text_buffer(char *); // init from file or create new static void edit_file(char *); // edit one file static void do_cmd(int); // execute a command static int next_tabstop(int); @@ -543,7 +542,6 @@ static void cookmode(void); // return to "cooked" mode on tty static int mysleep(int); static int readit(void); // read (maybe cursor) key from stdin static int get_one_char(void); // read 1 char from stdin -static int file_size(const char *); // what is the byte size of "fn" #if !ENABLE_FEATURE_VI_READONLY #define file_insert(fn, p, update_ro_status) file_insert(fn, p) #endif @@ -578,8 +576,8 @@ static char *char_search(char *, const char *, int, int); // search for pattern #if ENABLE_FEATURE_VI_COLON static char *get_one_address(char *, int *); // get colon addr, if present static char *get_address(char *, int *, int *); // get two colon addrs, if present -static void colon(char *); // execute the "colon" mode cmds #endif +static void colon(char *); // execute the "colon" mode cmds #if ENABLE_FEATURE_VI_USE_SIGNALS static void winch_sig(int); // catch window size changes static void suspend_sig(int); // catch ctrl-Z @@ -725,32 +723,29 @@ int vi_main(int argc, char **argv) static int init_text_buffer(char *fn) { int rc; - int size = file_size(fn); // file size. -1 means does not exist. flush_undo_data(); + modified_count = 0; + last_modified_count = -1; +#if ENABLE_FEATURE_VI_YANKMARK + /* init the marks */ + memset(mark, 0, sizeof(mark)); +#endif /* allocate/reallocate text buffer */ free(text); - text_size = size + 10240; + text_size = 10240; screenbegin = dot = end = text = xzalloc(text_size); if (fn != current_filename) { free(current_filename); current_filename = xstrdup(fn); } - if (size < 0) { + rc = file_insert(fn, text, 1); + if (rc < 0) { // file doesnt exist. Start empty buf with dummy line char_insert(text, '\n', NO_UNDO); - rc = 0; - } else { - rc = file_insert(fn, text, 1); } - modified_count = 0; - last_modified_count = -1; -#if ENABLE_FEATURE_VI_YANKMARK - /* init the marks. */ - memset(mark, 0, sizeof(mark)); -#endif return rc; } @@ -1018,13 +1013,71 @@ static void setops(const char *args, const char *opname, int flg_no, } #endif +#endif /* FEATURE_VI_COLON */ + // buf must be no longer than MAX_INPUT_LEN! static void colon(char *buf) { +#if !ENABLE_FEATURE_VI_COLON + /* Simple ":cmd" handler with minimal set of commands */ + char *p = buf; + int cnt; + + if (*p == ':') + p++; + cnt = strlen(p); + if (cnt == 0) + return; + if (strncmp(p, "quit", cnt) == 0 + || strncmp(p, "q!", cnt) == 0 + ) { + if (modified_count && p[1] != '!') { + status_line_bold("No write since last change (:%s! overrides)", p); + } else { + editing = 0; + } + return; + } + if (strncmp(p, "write", cnt) == 0 + || strncmp(p, "wq", cnt) == 0 + || strncmp(p, "wn", cnt) == 0 + || (p[0] == 'x' && !p[1]) + ) { + cnt = file_write(current_filename, text, end - 1); + if (cnt < 0) { + if (cnt == -1) + status_line_bold("Write error: %s", strerror(errno)); + } else { + modified_count = 0; + last_modified_count = -1; + status_line("'%s' %dL, %dC", + current_filename, + count_lines(text, end - 1), cnt + ); + if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n' + || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N' + ) { + editing = 0; + } + } + return; + } + if (strncmp(p, "file", cnt) == 0) { + last_status_cksum = 0; // force status update + return; + } + if (sscanf(p, "%d", &cnt) > 0) { + dot = find_line(cnt); + dot_skip_over_ws(); + return; + } + not_implemented(p); +#else + char c, *orig_buf, *buf1, *q, *r; char *fn, cmd[MAX_INPUT_LEN], args[MAX_INPUT_LEN]; - int i, l, li, ch, b, e; - int useforce, forced = FALSE; + int i, l, li, b, e; + int useforce; // :3154 // if (-e line 3154) goto it else stay put // :4,33w! foo // write a portion of buffer to file "foo" @@ -1046,7 +1099,7 @@ static void colon(char *buf) if (*buf == ':') buf++; // move past the ':' - li = ch = i = 0; + li = i = 0; b = e = -1; q = text; // assume 1,$ for the range r = end - 1; @@ -1127,6 +1180,8 @@ static void colon(char *buf) dot = yank_delete(q, r, 1, YANKDEL, ALLOW_UNDO); // save, then delete lines dot_skip_over_ws(); } else if (strncmp(cmd, "edit", i) == 0) { // Edit a file + int size; + // don't edit, if the current file has been modified if (modified_count && !useforce) { status_line_bold("No write since last change (:%s! overrides)", cmd); @@ -1144,8 +1199,7 @@ static void colon(char *buf) goto ret; } - if (init_text_buffer(fn) < 0) - goto ret; + size = init_text_buffer(fn); #if ENABLE_FEATURE_VI_YANKMARK if (Ureg >= 0 && Ureg < 28) { @@ -1161,12 +1215,14 @@ static void colon(char *buf) li = count_lines(text, end - 1); status_line("'%s'%s" IF_FEATURE_VI_READONLY("%s") - " %dL, %dC", current_filename, - (file_size(fn) < 0 ? " [New file]" : ""), + " %dL, %dC", + current_filename, + (size < 0 ? " [New file]" : ""), IF_FEATURE_VI_READONLY( ((readonly_mode) ? " [Readonly]" : ""), ) - li, ch); + li, (int)(end - text) + ); } else if (strncmp(cmd, "file", i) == 0) { // what File is this if (b != -1 || e != -1) { status_line_bold("No address allowed on this command"); @@ -1255,6 +1311,8 @@ static void colon(char *buf) } editing = 0; } else if (strncmp(cmd, "read", i) == 0) { // read file into text[] + int size; + fn = args; if (!fn[0]) { status_line_bold("No filename given"); @@ -1268,23 +1326,24 @@ static void colon(char *buf) q = next_line(q); { // dance around potentially-reallocated text[] uintptr_t ofs = q - text; - ch = file_insert(fn, q, 0); + size = file_insert(fn, q, /*update_ro:*/ 0); q = text + ofs; } - if (ch < 0) + if (size < 0) goto ret; // nothing was inserted // how many lines in text[]? - li = count_lines(q, q + ch - 1); + li = count_lines(q, q + size - 1); status_line("'%s'" IF_FEATURE_VI_READONLY("%s") - " %dL, %dC", fn, + " %dL, %dC", + fn, IF_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),) - li, ch); - if (ch > 0) { + li, size + ); + if (size > 0) { // if the insert is before "dot" then we need to update if (q <= dot) - dot += ch; - // modified_count++; + dot += size; } } else if (strncmp(cmd, "rewind", i) == 0) { // rewind cmd line args if (modified_count && !useforce) { @@ -1409,6 +1468,9 @@ static void colon(char *buf) || strncmp(cmd, "wn", i) == 0 || (cmd[0] == 'x' && !cmd[1]) ) { + int size; + //int forced = FALSE; + // is there a file name to write to? if (args[0]) { fn = args; @@ -1421,34 +1483,33 @@ static void colon(char *buf) #endif // how many lines in text[]? li = count_lines(q, r); - ch = r - q + 1; - // see if file exists- if not, its just a new file request - if (useforce) { + size = r - q + 1; + //if (useforce) { // if "fn" is not write-able, chmod u+w // sprintf(syscmd, "chmod u+w %s", fn); // system(syscmd); - forced = TRUE; - } + // forced = TRUE; + //} l = file_write(fn, q, r); - if (useforce && forced) { + //if (useforce && forced) { // chmod u-w // sprintf(syscmd, "chmod u-w %s", fn); // system(syscmd); - forced = FALSE; - } + // forced = FALSE; + //} if (l < 0) { if (l == -1) status_line_bold_errno(fn); } else { status_line("'%s' %dL, %dC", fn, li, l); - if (q == text && r == end - 1 && l == ch) { + if (q == text && r == end - 1 && l == size) { modified_count = 0; last_modified_count = -1; } if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n' || cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N' ) - && l == ch + && l == size ) { editing = 0; } @@ -1475,9 +1536,8 @@ static void colon(char *buf) colon_s_fail: status_line(":s expression missing delimiters"); #endif -} - #endif /* FEATURE_VI_COLON */ +} static void Hit_Return(void) { @@ -2851,17 +2911,6 @@ static char *get_input_line(const char *prompt) #undef buf } -static int file_size(const char *fn) // what is the byte size of "fn" -{ - struct stat st_buf; - int cnt; - - cnt = -1; - if (fn && stat(fn, &st_buf) == 0) // see if file exists - cnt = (int) st_buf.st_size; - return cnt; -} - // might reallocate text[]! static int file_insert(const char *fn, char *p, int update_ro_status) { @@ -2869,42 +2918,40 @@ static int file_insert(const char *fn, char *p, int update_ro_status) int fd, size; struct stat statbuf; - /* Validate file */ - if (stat(fn, &statbuf) < 0) { - status_line_bold_errno(fn); - goto fi0; - } - if (!S_ISREG(statbuf.st_mode)) { - // This is not a regular file - status_line_bold("'%s' is not a regular file", fn); - goto fi0; - } if (p < text || p > end) { status_line_bold("Trying to insert file outside of memory"); - goto fi0; + return cnt; } - // read file to buffer fd = open(fn, O_RDONLY); if (fd < 0) { status_line_bold_errno(fn); - goto fi0; + return cnt; + } + + /* Validate file */ + if (fstat(fd, &statbuf) < 0) { + status_line_bold_errno(fn); + goto fi; + } + if (!S_ISREG(statbuf.st_mode)) { + status_line_bold("'%s' is not a regular file", fn); + goto fi; } size = (statbuf.st_size < INT_MAX ? (int)statbuf.st_size : INT_MAX); p += text_hole_make(p, size); - cnt = safe_read(fd, p, size); + cnt = full_read(fd, p, size); if (cnt < 0) { status_line_bold_errno(fn); p = text_hole_delete(p, p + size - 1, NO_UNDO); // un-do buffer insert } else if (cnt < size) { - // There was a partial read, shrink unused space text[] - p = text_hole_delete(p + cnt, p + size - 1, NO_UNDO); // un-do buffer insert + // There was a partial read, shrink unused space + p = text_hole_delete(p + cnt, p + size - 1, NO_UNDO); status_line_bold("can't read '%s'", fn); } -// if (cnt >= size) -// modified_count++; + fi: close(fd); - fi0: + #if ENABLE_FEATURE_VI_READONLY if (update_ro_status && ((access(fn, W_OK) < 0) || @@ -3821,50 +3868,7 @@ static void do_cmd(int c) break; case ':': // :- the colon mode commands p = get_input_line(":"); // get input line- use "status line" -#if ENABLE_FEATURE_VI_COLON colon(p); // execute the command -#else - if (*p == ':') - p++; // move past the ':' - cnt = strlen(p); - if (cnt <= 0) - break; - if (strncmp(p, "quit", cnt) == 0 - || strncmp(p, "q!", cnt) == 0 // delete lines - ) { - if (modified_count && p[1] != '!') { - status_line_bold("No write since last change (:%s! overrides)", p); - } else { - editing = 0; - } - } else if (strncmp(p, "write", cnt) == 0 - || strncmp(p, "wq", cnt) == 0 - || strncmp(p, "wn", cnt) == 0 - || (p[0] == 'x' && !p[1]) - ) { - cnt = file_write(current_filename, text, end - 1); - if (cnt < 0) { - if (cnt == -1) - status_line_bold("Write error: %s", strerror(errno)); - } else { - modified_count = 0; - last_modified_count = -1; - status_line("'%s' %dL, %dC", current_filename, count_lines(text, end - 1), cnt); - if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n' - || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N' - ) { - editing = 0; - } - } - } else if (strncmp(p, "file", cnt) == 0) { - last_status_cksum = 0; // force status update - } else if (sscanf(p, "%d", &j) > 0) { - dot = find_line(j); // go to line # j - dot_skip_over_ws(); - } else { // unrecognized cmd - not_implemented(p); - } -#endif /* !FEATURE_VI_COLON */ break; case '<': // <- Left shift something case '>': // >- Right shift something |