diff options
Diffstat (limited to 'src/getstring.c')
-rw-r--r-- | src/getstring.c | 383 |
1 files changed, 198 insertions, 185 deletions
diff --git a/src/getstring.c b/src/getstring.c index aedd842..513ad67 100644 --- a/src/getstring.c +++ b/src/getstring.c @@ -37,126 +37,134 @@ #include "calcurse.h" struct getstr_charinfo { - unsigned int offset, dpyoff; + unsigned int offset, dpyoff; }; struct getstr_status { - char *s; - struct getstr_charinfo *ci; - int pos, len; - int scrpos; + char *s; + struct getstr_charinfo *ci; + int pos, len; + int scrpos; }; /* Print the string at the desired position. */ -static void getstr_print(WINDOW * win, int x, int y, struct getstr_status *st) +static void getstr_print(WINDOW * win, int x, int y, + struct getstr_status *st) { - char c = 0; - - /* print string */ - mvwaddnstr(win, y, x, &st->s[st->ci[st->scrpos].offset], -1); - wclrtoeol(win); - - /* print scrolling indicator */ - if (st->scrpos > 0 && st->ci[st->len].dpyoff - - st->ci[st->scrpos].dpyoff > col - 2) - c = '*'; - else if (st->scrpos > 0) - c = '<'; - else if (st->ci[st->len].dpyoff - st->ci[st->scrpos].dpyoff > col - 2) - c = '>'; - mvwprintw(win, y, col - 2, " %c", c); - - /* print cursor */ - wmove(win, y, st->ci[st->pos].dpyoff - st->ci[st->scrpos].dpyoff); - wchgat(win, 1, A_REVERSE, COLR_CUSTOM, NULL); + char c = 0; + + /* print string */ + mvwaddnstr(win, y, x, &st->s[st->ci[st->scrpos].offset], -1); + wclrtoeol(win); + + /* print scrolling indicator */ + if (st->scrpos > 0 && st->ci[st->len].dpyoff - + st->ci[st->scrpos].dpyoff > col - 2) + c = '*'; + else if (st->scrpos > 0) + c = '<'; + else if (st->ci[st->len].dpyoff - st->ci[st->scrpos].dpyoff > + col - 2) + c = '>'; + mvwprintw(win, y, col - 2, " %c", c); + + /* print cursor */ + wmove(win, y, st->ci[st->pos].dpyoff - st->ci[st->scrpos].dpyoff); + wchgat(win, 1, A_REVERSE, COLR_CUSTOM, NULL); } /* Delete a character at the given position in string. */ static void getstr_del_char(struct getstr_status *st) { - char *str = st->s + st->ci[st->pos].offset; - int cl = st->ci[st->pos + 1].offset - st->ci[st->pos].offset; - int cw = st->ci[st->pos + 1].dpyoff - st->ci[st->pos].dpyoff; - int i; - - memmove(str, str + cl, strlen(str) + 1); - - st->len--; - for (i = st->pos; i <= st->len; i++) { - st->ci[i].offset = st->ci[i + 1].offset - cl; - st->ci[i].dpyoff = st->ci[i + 1].dpyoff - cw; - } + char *str = st->s + st->ci[st->pos].offset; + int cl = st->ci[st->pos + 1].offset - st->ci[st->pos].offset; + int cw = st->ci[st->pos + 1].dpyoff - st->ci[st->pos].dpyoff; + int i; + + memmove(str, str + cl, strlen(str) + 1); + + st->len--; + for (i = st->pos; i <= st->len; i++) { + st->ci[i].offset = st->ci[i + 1].offset - cl; + st->ci[i].dpyoff = st->ci[i + 1].dpyoff - cw; + } } /* Add a character at the given position in string. */ static void getstr_ins_char(struct getstr_status *st, char *c) { - char *str = st->s + st->ci[st->pos].offset; - int cl = UTF8_LENGTH(c[0]); - int cw = utf8_width(c); - int i; - - memmove(str + cl, str, strlen(str) + 1); - for (i = 0; i < cl; i++, str++) - *str = c[i]; - - for (i = st->len; i >= st->pos; i--) { - st->ci[i + 1].offset = st->ci[i].offset + cl; - st->ci[i + 1].dpyoff = st->ci[i].dpyoff + cw; - } - st->len++; + char *str = st->s + st->ci[st->pos].offset; + int cl = UTF8_LENGTH(c[0]); + int cw = utf8_width(c); + int i; + + memmove(str + cl, str, strlen(str) + 1); + for (i = 0; i < cl; i++, str++) + *str = c[i]; + + for (i = st->len; i >= st->pos; i--) { + st->ci[i + 1].offset = st->ci[i].offset + cl; + st->ci[i + 1].dpyoff = st->ci[i].dpyoff + cw; + } + st->len++; } static void bell(void) { - putchar('\a'); + putchar('\a'); } /* Initialize getstring data structure. */ static void -getstr_init(struct getstr_status *st, char *str, struct getstr_charinfo *ci) +getstr_init(struct getstr_status *st, char *str, + struct getstr_charinfo *ci) { - int width; + int width; - st->s = str; - st->ci = ci; + st->s = str; + st->ci = ci; - st->len = width = 0; - while (*str) { - st->ci[st->len].offset = str - st->s; - st->ci[st->len].dpyoff = width; + st->len = width = 0; + while (*str) { + st->ci[st->len].offset = str - st->s; + st->ci[st->len].dpyoff = width; - st->len++; - width += utf8_width(str); - str += UTF8_LENGTH(*str); - } - st->ci[st->len].offset = str - st->s; - st->ci[st->len].dpyoff = width; + st->len++; + width += utf8_width(str); + str += UTF8_LENGTH(*str); + } + st->ci[st->len].offset = str - st->s; + st->ci[st->len].dpyoff = width; - st->pos = st->len; - st->scrpos = 0; + st->pos = st->len; + st->scrpos = 0; } /* Scroll left/right if the cursor moves outside the window range. */ static void getstr_fixscr(struct getstr_status *st) { - const int pgsize = col / 3; - int pgskip; - - while (st->pos < st->scrpos) { - pgskip = 0; - while (pgskip < pgsize && st->scrpos > 0) { - st->scrpos--; - pgskip += st->ci[st->scrpos + 1].dpyoff - st->ci[st->scrpos].dpyoff; - } - } - while (st->ci[st->pos].dpyoff - st->ci[st->scrpos].dpyoff > col - 2) { - pgskip = 0; - while (pgskip < pgsize && st->scrpos < st->len) { - pgskip += st->ci[st->scrpos + 1].dpyoff - st->ci[st->scrpos].dpyoff; - st->scrpos++; - } - } + const int pgsize = col / 3; + int pgskip; + + while (st->pos < st->scrpos) { + pgskip = 0; + while (pgskip < pgsize && st->scrpos > 0) { + st->scrpos--; + pgskip += + st->ci[st->scrpos + 1].dpyoff - + st->ci[st->scrpos].dpyoff; + } + } + while (st->ci[st->pos].dpyoff - st->ci[st->scrpos].dpyoff > + col - 2) { + pgskip = 0; + while (pgskip < pgsize && st->scrpos < st->len) { + pgskip += + st->ci[st->scrpos + 1].dpyoff - + st->ci[st->scrpos].dpyoff; + st->scrpos++; + } + } } /* @@ -169,114 +177,119 @@ static void getstr_fixscr(struct getstr_status *st) */ enum getstr getstring(WINDOW * win, char *str, int l, int x, int y) { - struct getstr_status st; - struct getstr_charinfo ci[l + 1]; - - int ch, k; - char c[UTF8_MAXLEN]; - - getstr_init(&st, str, ci); - custom_apply_attr(win, ATTR_HIGHEST); - - for (;;) { - getstr_fixscr(&st); - getstr_print(win, x, y, &st); - wins_doupdate(); - - if ((ch = wgetch(win)) == '\n') - break; - switch (ch) { - case KEY_BACKSPACE: /* delete one character */ - case 330: - case 127: - case CTRL('H'): - if (st.pos > 0) { - st.pos--; - getstr_del_char(&st); - } else { - bell(); - } - break; - case CTRL('D'): /* delete next character */ - if (st.pos < st.len) - getstr_del_char(&st); - else - bell(); - break; - case CTRL('W'): /* delete a word */ - if (st.pos > 0) { - while (st.pos && st.s[st.ci[st.pos - 1].offset] == ' ') { - st.pos--; - getstr_del_char(&st); - } - while (st.pos && st.s[st.ci[st.pos - 1].offset] != ' ') { - st.pos--; - getstr_del_char(&st); - } - } else { - bell(); - } - break; - case CTRL('K'): /* delete to end-of-line */ - st.s[st.ci[st.pos].offset] = 0; - st.len = st.pos; - break; - case CTRL('A'): /* go to begginning of string */ - st.pos = 0; - break; - case CTRL('E'): /* go to end of string */ - st.pos = st.len; - break; - case KEY_LEFT: /* move one char backward */ - case CTRL('B'): - if (st.pos > 0) - st.pos--; - break; - case KEY_RIGHT: /* move one char forward */ - case CTRL('F'): - if (st.pos < st.len) - st.pos++; - break; - case ESCAPE: /* cancel editing */ - return GETSTRING_ESC; - break; - default: /* insert one character */ - c[0] = ch; - for (k = 1; k < MIN(UTF8_LENGTH(c[0]), UTF8_MAXLEN); k++) - c[k] = (unsigned char)wgetch(win); - if (st.ci[st.len].offset + k < l) { - getstr_ins_char(&st, c); - st.pos++; - } - } - } - - custom_remove_attr(win, ATTR_HIGHEST); - - return st.len == 0 ? GETSTRING_RET : GETSTRING_VALID; + struct getstr_status st; + struct getstr_charinfo ci[l + 1]; + + int ch, k; + char c[UTF8_MAXLEN]; + + getstr_init(&st, str, ci); + custom_apply_attr(win, ATTR_HIGHEST); + + for (;;) { + getstr_fixscr(&st); + getstr_print(win, x, y, &st); + wins_doupdate(); + + if ((ch = wgetch(win)) == '\n') + break; + switch (ch) { + case KEY_BACKSPACE: /* delete one character */ + case 330: + case 127: + case CTRL('H'): + if (st.pos > 0) { + st.pos--; + getstr_del_char(&st); + } else { + bell(); + } + break; + case CTRL('D'): /* delete next character */ + if (st.pos < st.len) + getstr_del_char(&st); + else + bell(); + break; + case CTRL('W'): /* delete a word */ + if (st.pos > 0) { + while (st.pos + && st.s[st.ci[st.pos - 1].offset] == + ' ') { + st.pos--; + getstr_del_char(&st); + } + while (st.pos + && st.s[st.ci[st.pos - 1].offset] != + ' ') { + st.pos--; + getstr_del_char(&st); + } + } else { + bell(); + } + break; + case CTRL('K'): /* delete to end-of-line */ + st.s[st.ci[st.pos].offset] = 0; + st.len = st.pos; + break; + case CTRL('A'): /* go to begginning of string */ + st.pos = 0; + break; + case CTRL('E'): /* go to end of string */ + st.pos = st.len; + break; + case KEY_LEFT: /* move one char backward */ + case CTRL('B'): + if (st.pos > 0) + st.pos--; + break; + case KEY_RIGHT: /* move one char forward */ + case CTRL('F'): + if (st.pos < st.len) + st.pos++; + break; + case ESCAPE: /* cancel editing */ + return GETSTRING_ESC; + break; + default: /* insert one character */ + c[0] = ch; + for (k = 1; + k < MIN(UTF8_LENGTH(c[0]), UTF8_MAXLEN); k++) + c[k] = (unsigned char)wgetch(win); + if (st.ci[st.len].offset + k < l) { + getstr_ins_char(&st, c); + st.pos++; + } + } + } + + custom_remove_attr(win, ATTR_HIGHEST); + + return st.len == 0 ? GETSTRING_RET : GETSTRING_VALID; } /* Update an already existing string. */ int updatestring(WINDOW * win, char **str, int x, int y) { - int len = strlen(*str); - char *buf; - enum getstr ret; + int len = strlen(*str); + char *buf; + enum getstr ret; - EXIT_IF(len + 1 > BUFSIZ, _("Internal error: line too long")); + EXIT_IF(len + 1 > BUFSIZ, _("Internal error: line too long")); - buf = mem_malloc(BUFSIZ); - memcpy(buf, *str, len + 1); + buf = mem_malloc(BUFSIZ); + memcpy(buf, *str, len + 1); - ret = getstring(win, buf, BUFSIZ, x, y); + ret = getstring(win, buf, BUFSIZ, x, y); - if (ret == GETSTRING_VALID) { - len = strlen(buf); - *str = mem_realloc(*str, len + 1, 1); - EXIT_IF(*str == NULL, _("out of memory")); - memcpy(*str, buf, len + 1); - } + if (ret == GETSTRING_VALID) { + len = strlen(buf); + *str = mem_realloc(*str, len + 1, 1); + EXIT_IF(*str == NULL, _("out of memory")); + memcpy(*str, buf, len + 1); + } - mem_free(buf); - return ret; + mem_free(buf); + return ret; } |