From f721e3ac031f892af46f255a47d7f54a91317b30 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:35 -0800 Subject: auto import from //depot/cupcake/@135843 --- readline.c | 488 ------------------------------------------------------------- 1 file changed, 488 deletions(-) delete mode 100644 readline.c (limited to 'readline.c') diff --git a/readline.c b/readline.c deleted file mode 100644 index 81bc491..0000000 --- a/readline.c +++ /dev/null @@ -1,488 +0,0 @@ -/* - * QEMU readline utility - * - * Copyright (c) 2003-2004 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "qemu-common.h" -#include "console.h" - -#define TERM_CMD_BUF_SIZE 4095 -#define TERM_MAX_CMDS 64 -#define NB_COMPLETIONS_MAX 256 - -#define IS_NORM 0 -#define IS_ESC 1 -#define IS_CSI 2 - -#define printf do_not_use_printf - -static char term_cmd_buf[TERM_CMD_BUF_SIZE + 1]; -static int term_cmd_buf_index; -static int term_cmd_buf_size; - -static char term_last_cmd_buf[TERM_CMD_BUF_SIZE + 1]; -static int term_last_cmd_buf_index; -static int term_last_cmd_buf_size; - -static int term_esc_state; -static int term_esc_param; - -static char *term_history[TERM_MAX_CMDS]; -static int term_hist_entry = -1; - -static int nb_completions; -int completion_index; -static char *completions[NB_COMPLETIONS_MAX]; - -static ReadLineFunc *term_readline_func; -static int term_is_password; -static char term_prompt[256]; -static void *term_readline_opaque; - -static void term_show_prompt2(void) -{ - term_printf("%s", term_prompt); - term_flush(); - term_last_cmd_buf_index = 0; - term_last_cmd_buf_size = 0; - term_esc_state = IS_NORM; -} - -static void term_show_prompt(void) -{ - term_show_prompt2(); - term_cmd_buf_index = 0; - term_cmd_buf_size = 0; -} - -/* update the displayed command line */ -static void term_update(void) -{ - int i, delta, len; - - if (term_cmd_buf_size != term_last_cmd_buf_size || - memcmp(term_cmd_buf, term_last_cmd_buf, term_cmd_buf_size) != 0) { - for(i = 0; i < term_last_cmd_buf_index; i++) { - term_printf("\033[D"); - } - term_cmd_buf[term_cmd_buf_size] = '\0'; - if (term_is_password) { - len = strlen(term_cmd_buf); - for(i = 0; i < len; i++) - term_printf("*"); - } else { - term_printf("%s", term_cmd_buf); - } - term_printf("\033[K"); - memcpy(term_last_cmd_buf, term_cmd_buf, term_cmd_buf_size); - term_last_cmd_buf_size = term_cmd_buf_size; - term_last_cmd_buf_index = term_cmd_buf_size; - } - if (term_cmd_buf_index != term_last_cmd_buf_index) { - delta = term_cmd_buf_index - term_last_cmd_buf_index; - if (delta > 0) { - for(i = 0;i < delta; i++) { - term_printf("\033[C"); - } - } else { - delta = -delta; - for(i = 0;i < delta; i++) { - term_printf("\033[D"); - } - } - term_last_cmd_buf_index = term_cmd_buf_index; - } - term_flush(); -} - -static void term_insert_char(int ch) -{ - if (term_cmd_buf_index < TERM_CMD_BUF_SIZE) { - memmove(term_cmd_buf + term_cmd_buf_index + 1, - term_cmd_buf + term_cmd_buf_index, - term_cmd_buf_size - term_cmd_buf_index); - term_cmd_buf[term_cmd_buf_index] = ch; - term_cmd_buf_size++; - term_cmd_buf_index++; - } -} - -static void term_backward_char(void) -{ - if (term_cmd_buf_index > 0) { - term_cmd_buf_index--; - } -} - -static void term_forward_char(void) -{ - if (term_cmd_buf_index < term_cmd_buf_size) { - term_cmd_buf_index++; - } -} - -static void term_delete_char(void) -{ - if (term_cmd_buf_index < term_cmd_buf_size) { - memmove(term_cmd_buf + term_cmd_buf_index, - term_cmd_buf + term_cmd_buf_index + 1, - term_cmd_buf_size - term_cmd_buf_index - 1); - term_cmd_buf_size--; - } -} - -static void term_backspace(void) -{ - if (term_cmd_buf_index > 0) { - term_backward_char(); - term_delete_char(); - } -} - -static void term_backword(void) -{ - int start; - - if (term_cmd_buf_index == 0 || term_cmd_buf_index > term_cmd_buf_size) { - return; - } - - start = term_cmd_buf_index - 1; - - /* find first word (backwards) */ - while (start > 0) { - if (!isspace(term_cmd_buf[start])) { - break; - } - - --start; - } - - /* find first space (backwards) */ - while (start > 0) { - if (isspace(term_cmd_buf[start])) { - ++start; - break; - } - - --start; - } - - /* remove word */ - if (start < term_cmd_buf_index) { - memmove(term_cmd_buf + start, - term_cmd_buf + term_cmd_buf_index, - term_cmd_buf_size - term_cmd_buf_index); - term_cmd_buf_size -= term_cmd_buf_index - start; - term_cmd_buf_index = start; - } -} - -static void term_bol(void) -{ - term_cmd_buf_index = 0; -} - -static void term_eol(void) -{ - term_cmd_buf_index = term_cmd_buf_size; -} - -static void term_up_char(void) -{ - int idx; - - if (term_hist_entry == 0) - return; - if (term_hist_entry == -1) { - /* Find latest entry */ - for (idx = 0; idx < TERM_MAX_CMDS; idx++) { - if (term_history[idx] == NULL) - break; - } - term_hist_entry = idx; - } - term_hist_entry--; - if (term_hist_entry >= 0) { - pstrcpy(term_cmd_buf, sizeof(term_cmd_buf), - term_history[term_hist_entry]); - term_cmd_buf_index = term_cmd_buf_size = strlen(term_cmd_buf); - } -} - -static void term_down_char(void) -{ - if (term_hist_entry == TERM_MAX_CMDS - 1 || term_hist_entry == -1) - return; - if (term_history[++term_hist_entry] != NULL) { - pstrcpy(term_cmd_buf, sizeof(term_cmd_buf), - term_history[term_hist_entry]); - } else { - term_hist_entry = -1; - } - term_cmd_buf_index = term_cmd_buf_size = strlen(term_cmd_buf); -} - -static void term_hist_add(const char *cmdline) -{ - char *hist_entry, *new_entry; - int idx; - - if (cmdline[0] == '\0') - return; - new_entry = NULL; - if (term_hist_entry != -1) { - /* We were editing an existing history entry: replace it */ - hist_entry = term_history[term_hist_entry]; - idx = term_hist_entry; - if (strcmp(hist_entry, cmdline) == 0) { - goto same_entry; - } - } - /* Search cmdline in history buffers */ - for (idx = 0; idx < TERM_MAX_CMDS; idx++) { - hist_entry = term_history[idx]; - if (hist_entry == NULL) - break; - if (strcmp(hist_entry, cmdline) == 0) { - same_entry: - new_entry = hist_entry; - /* Put this entry at the end of history */ - memmove(&term_history[idx], &term_history[idx + 1], - (TERM_MAX_CMDS - idx + 1) * sizeof(char *)); - term_history[TERM_MAX_CMDS - 1] = NULL; - for (; idx < TERM_MAX_CMDS; idx++) { - if (term_history[idx] == NULL) - break; - } - break; - } - } - if (idx == TERM_MAX_CMDS) { - /* Need to get one free slot */ - free(term_history[0]); - memcpy(term_history, &term_history[1], - (TERM_MAX_CMDS - 1) * sizeof(char *)); - term_history[TERM_MAX_CMDS - 1] = NULL; - idx = TERM_MAX_CMDS - 1; - } - if (new_entry == NULL) - new_entry = strdup(cmdline); - term_history[idx] = new_entry; - term_hist_entry = -1; -} - -/* completion support */ - -void add_completion(const char *str) -{ - if (nb_completions < NB_COMPLETIONS_MAX) { - completions[nb_completions++] = qemu_strdup(str); - } -} - -static void term_completion(void) -{ - int len, i, j, max_width, nb_cols, max_prefix; - char *cmdline; - - nb_completions = 0; - - cmdline = qemu_malloc(term_cmd_buf_index + 1); - if (!cmdline) - return; - memcpy(cmdline, term_cmd_buf, term_cmd_buf_index); - cmdline[term_cmd_buf_index] = '\0'; - readline_find_completion(cmdline); - qemu_free(cmdline); - - /* no completion found */ - if (nb_completions <= 0) - return; - if (nb_completions == 1) { - len = strlen(completions[0]); - for(i = completion_index; i < len; i++) { - term_insert_char(completions[0][i]); - } - /* extra space for next argument. XXX: make it more generic */ - if (len > 0 && completions[0][len - 1] != '/') - term_insert_char(' '); - } else { - term_printf("\n"); - max_width = 0; - max_prefix = 0; - for(i = 0; i < nb_completions; i++) { - len = strlen(completions[i]); - if (i==0) { - max_prefix = len; - } else { - if (len < max_prefix) - max_prefix = len; - for(j=0; j max_width) - max_width = len; - } - if (max_prefix > 0) - for(i = completion_index; i < max_prefix; i++) { - term_insert_char(completions[0][i]); - } - max_width += 2; - if (max_width < 10) - max_width = 10; - else if (max_width > 80) - max_width = 80; - nb_cols = 80 / max_width; - j = 0; - for(i = 0; i < nb_completions; i++) { - term_printf("%-*s", max_width, completions[i]); - if (++j == nb_cols || i == (nb_completions - 1)) { - term_printf("\n"); - j = 0; - } - } - term_show_prompt2(); - } -} - -/* return true if command handled */ -void readline_handle_byte(int ch) -{ - switch(term_esc_state) { - case IS_NORM: - switch(ch) { - case 1: - term_bol(); - break; - case 4: - term_delete_char(); - break; - case 5: - term_eol(); - break; - case 9: - term_completion(); - break; - case 10: - case 13: - term_cmd_buf[term_cmd_buf_size] = '\0'; - if (!term_is_password) - term_hist_add(term_cmd_buf); - term_printf("\n"); - term_cmd_buf_index = 0; - term_cmd_buf_size = 0; - term_last_cmd_buf_index = 0; - term_last_cmd_buf_size = 0; - /* NOTE: readline_start can be called here */ - term_readline_func(term_readline_opaque, term_cmd_buf); - break; - case 23: - /* ^W */ - term_backword(); - break; - case 27: - term_esc_state = IS_ESC; - break; - case 127: - case 8: - term_backspace(); - break; - case 155: - term_esc_state = IS_CSI; - break; - default: - if (ch >= 32) { - term_insert_char(ch); - } - break; - } - break; - case IS_ESC: - if (ch == '[') { - term_esc_state = IS_CSI; - term_esc_param = 0; - } else { - term_esc_state = IS_NORM; - } - break; - case IS_CSI: - switch(ch) { - case 'A': - case 'F': - term_up_char(); - break; - case 'B': - case 'E': - term_down_char(); - break; - case 'D': - term_backward_char(); - break; - case 'C': - term_forward_char(); - break; - case '0' ... '9': - term_esc_param = term_esc_param * 10 + (ch - '0'); - goto the_end; - case '~': - switch(term_esc_param) { - case 1: - term_bol(); - break; - case 3: - term_delete_char(); - break; - case 4: - term_eol(); - break; - } - break; - default: - break; - } - term_esc_state = IS_NORM; - the_end: - break; - } - term_update(); -} - -void readline_start(const char *prompt, int is_password, - ReadLineFunc *readline_func, void *opaque) -{ - pstrcpy(term_prompt, sizeof(term_prompt), prompt); - term_readline_func = readline_func; - term_readline_opaque = opaque; - term_is_password = is_password; - term_show_prompt(); -} - -const char *readline_get_history(unsigned int index) -{ - if (index >= TERM_MAX_CMDS) - return NULL; - return term_history[index]; -} - - -- cgit v1.1