From 1816059722e8c7b159cfaa265f19e227e2e96a03 Mon Sep 17 00:00:00 2001 From: Kalle Wallin Date: Sun, 22 Jan 2006 20:20:31 +0000 Subject: Added wide-char version git-svn-id: https://svn.musicpd.org/ncmpc/trunk@3857 09075e82-0dd4-0310-85a5-a0d7c8717e4f --- src/wreadln.c | 316 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 313 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/wreadln.c b/src/wreadln.c index d817ee628..2c8c55dd5 100644 --- a/src/wreadln.c +++ b/src/wreadln.c @@ -18,12 +18,18 @@ * */ +#include "config.h" + #include #include -#include #include -#include "config.h" +#ifdef USE_NCURSESW +#include +#else +#include +#endif + #include "wreadln.h" #define KEY_CTRL_A 1 @@ -46,6 +52,10 @@ wrln_gcmp_post_cb_t wrln_post_completion_callback = NULL; extern void screen_bell(void); extern size_t my_strlen(char *str); + +#ifndef USE_NCURSESW +/* libcurses version */ + gchar * wreadln(WINDOW *w, gchar *prompt, @@ -347,5 +357,305 @@ wreadln(WINDOW *w, return g_realloc(line, strlen(line)+1); } - +#else +/* libcursesw version */ + +gchar * +wreadln(WINDOW *w, + gchar *prompt, + gchar *initial_value, + gint x1, + GList **history, + GCompletion *gcmp) +{ + GList *hlist = NULL, *hcurrent = NULL; + wchar_t *wline; + gchar *mbline; + gint x0, x, y, width, start; + gint cursor; + wint_t wch; + gint key; + gint i; + + /* move the cursor to the beginning of the line */ + void cursor_move_home(void) { + x=0; + cursor=0; + start=0; + } + /* move the cursor to the end of the line */ + void cursor_move_to_eol(void) { + cursor = wcslen(wline); + //x=wcswidth(wline,cursor); + if( cursor+x0 >= x1 ) + start = cursor-width+1; + } + /* move the cursor one step to the left */ + void cursor_move_left(void) { + if( cursor > 0 ) + { + if( cursor==start && start > 0 ) + start--; + //x-=wcwidth(wline[cursor]); + cursor--; + } + } + /* move the cursor one step to the right */ + void cursor_move_right(void) { + if( cursor < wcslen(wline) && cursor= x1 && start 0 ) + { + for (i = cursor - 1; wline[i] != 0; i++) + wline[i] = wline[i + 1]; + cursor_move_left(); + } + } + /* handle delete */ + void delete() { + if( cursor <= wcslen(wline) - 1 ) + { + for (i = cursor; wline[i] != 0; i++) + wline[i] = wline[i + 1]; + } + } + /* draw line buffer and update cursor position */ + void drawline() { + wmove(w, y, x0); + /* clear input area */ + whline(w, ' ', width); + /* print visible part of the line buffer */ + waddnwstr(w, wline+start, width); + /* move the cursor to the correct position */ + wmove(w, y, x0 + cursor-start); + /* tell ncurses to redraw the screen */ + doupdate(); + } + + /* initialize variables */ + start = 0; + x = 0; + cursor = 0; + mbline = NULL; + + /* allocate a line buffer */ + wline = g_malloc0(wrln_max_line_size*sizeof(wchar_t)); + /* turn off echo */ + noecho(); + /* make shure the cursor is visible */ + curs_set(1); + /* print prompt string */ + if( prompt ) + waddstr(w, prompt); + /* retrive y and x0 position */ + getyx(w, y, x0); + /* check the x1 value */ + if( x1<=x0 || x1>COLS ) + x1 = COLS; + width = x1-x0; + /* clear input area */ + mvwhline(w, y, x0, ' ', width); + + + if( history ) + { + /* append the a new line to our history list */ + *history = g_list_append(*history, g_malloc0(wrln_max_line_size)); + /* hlist points to the current item in the history list */ + hlist = g_list_last(*history); + hcurrent = hlist; + } + if( initial_value == (char *) -1 ) + { + /* get previous history entry */ + if( history && hlist->prev ) + { + if( hlist==hcurrent ) + { + /* save the current line */ + //g_strlcpy(hlist->data, line, wrln_max_line_size); + } + /* get previous line */ + hlist = hlist->prev; + mbstowcs(wline, hlist->data, wrln_max_line_size); + } + cursor_move_to_eol(); + drawline(); + } + else if( initial_value ) + { + /* copy the initial value to the line buffer */ + mbstowcs(wline, initial_value, wrln_max_line_size); + cursor_move_to_eol(); + drawline(); + } + + wch=0; + key=0; + while( wch!=13 && wch!='\n' ) + { + key = wget_wch(w, &wch); + + if( key==KEY_CODE_YES ) + { + /* function key */ + switch(wch) + { + case KEY_HOME: + cursor_move_home(); + break; + case KEY_END: + cursor_move_to_eol(); + break; + case KEY_LEFT: + cursor_move_left(); + break; + case KEY_RIGHT: + cursor_move_right(); + break; + case KEY_DC: + delete(); + break; + case KEY_BCKSPC: + case KEY_BACKSPACE: + backspace(); + break; + case KEY_UP: + /* get previous history entry */ + if( history && hlist->prev ) + { + if( hlist==hcurrent ) + { + /* save the current line */ + wcstombs(hlist->data, wline, wrln_max_line_size); + } + /* get previous line */ + hlist = hlist->prev; + mbstowcs(wline, hlist->data, wrln_max_line_size); + } + cursor_move_to_eol(); + break; + case KEY_DOWN: + /* get next history entry */ + if( history && hlist->next ) + { + /* get next line */ + hlist = hlist->next; + mbstowcs(wline, hlist->data, wrln_max_line_size); + } + cursor_move_to_eol(); + break; + case KEY_RESIZE: + /* resize event */ + if( x1>COLS ) + { + x1=COLS; + width = x1-x0; + cursor_move_to_eol(); + } + /* make shure the cursor is visible */ + curs_set(1); + break; + } + + } + else if( key!=ERR ) + { + switch(wch) + { + case KEY_CTRL_A: + cursor_move_home(); + break; + case KEY_CTRL_D: + delete(); + break; + case KEY_CTRL_E: + cursor_move_to_eol(); + break; + case KEY_CTRL_G: + screen_bell(); + g_free(wline); + if( history ) + { + g_free(hcurrent->data); + hcurrent->data = NULL; + *history = g_list_delete_link(*history, hcurrent); + } + return NULL; + case KEY_CTRL_K: + wline[cursor] = 0; + break; + case '\n': + case 13: + /* ignore char */ + break; + default: + if( (wcslen(wline+cursor)) ) + { + /* the cursor is not at the last pos */ + wchar_t *tmp = NULL; + gsize len = (wcslen(wline+cursor)+1); + tmp = g_malloc0(len*sizeof(wchar_t)); + wmemcpy(tmp, wline+cursor, len); + wline[cursor] = wch; + wline[cursor+1] = 0; + wcscat(&wline[cursor+1], tmp); + g_free(tmp); + cursor_move_right(); + } + else + { + wline[cursor] = wch; + wline[cursor+1] = 0; + cursor_move_right(); + } + } + } + drawline(); + } + + i = wcstombs(NULL,wline,0)+1; + mbline = g_malloc0(i); + wcstombs(mbline, wline, i); + + /* update history */ + if( history ) + { + if( strlen(mbline) ) + { + /* update the current history entry */ + size_t size = strlen(mbline)+1; + hcurrent->data = g_realloc(hcurrent->data, size); + g_strlcpy(hcurrent->data, mbline, size); + } + else + { + /* the line was empty - remove the current history entry */ + g_free(hcurrent->data); + hcurrent->data = NULL; + *history = g_list_delete_link(*history, hcurrent); + } + + while( g_list_length(*history) > wrln_max_history_length ) + { + GList *first = g_list_first(*history); + + /* remove the oldest history entry */ + g_free(first->data); + first->data = NULL; + *history = g_list_delete_link(*history, first); + } + } + return mbline; +} + +#endif -- cgit v1.2.3