diff options
| -rw-r--r-- | input.c | 114 |
1 files changed, 113 insertions, 1 deletions
@@ -31,11 +31,14 @@ #include <curses.h> #include <err.h> #include <signal.h> +#include <stdbool.h> #include <stdio.h> #include <stdlib.h> +#include <string.h> #include <sysexits.h> #include <termios.h> #include <wchar.h> +#include <wctype.h> #include "chat.h" #include "edit.h" @@ -272,10 +275,105 @@ static int macroExpand(struct Edit *e) { return 0; } +static struct { + char *pre; + size_t pos; + size_t len; + bool suffix; +} tab; + +static int tabComplete(struct Edit *e, uint id) { + if (!tab.len) { + tab.pos = e->pos; + while (tab.pos && !iswspace(e->buf[tab.pos-1])) tab.pos--; + tab.len = e->pos - tab.pos; + if (!tab.len) return 0; + + size_t cap = tab.len * MB_CUR_MAX + 1; + char *buf = realloc(tab.pre, cap); + if (!buf) return -1; + tab.pre = buf; + + const wchar_t *ptr = &e->buf[tab.pos]; + size_t n = wcsnrtombs(tab.pre, &ptr, tab.len, cap-1, NULL); + if (n == (size_t)-1) return -1; + tab.pre[n] = '\0'; + tab.suffix = true; + } + + const char *comp = complete(id, tab.pre); + if (!comp) { + comp = complete(id, tab.pre); + tab.suffix ^= true; + } + if (!comp) { + tab.len = 0; + return 0; + } + + size_t cap = strlen(comp) + 1; + wchar_t *wcs = malloc(sizeof(*wcs) * cap); + if (!wcs) return -1; + + size_t n = mbstowcs(wcs, comp, cap); + assert(n != (size_t)-1); + + bool colon = (tab.len >= 2 && e->buf[tab.pos + tab.len - 2] == L':'); + + int error = editDelete(e, false, tab.pos, tab.len); + if (error) goto fail; + + tab.len = n; + if (wcs[0] == L'\\' || wcschr(wcs, L' ')) { + error = editReserve(e, tab.pos, tab.len); + if (error) goto fail; + } else if (wcs[0] != L'/' && tab.suffix && (!tab.pos || colon)) { + tab.len += 2; + error = editReserve(e, tab.pos, tab.len); + if (error) goto fail; + e->buf[tab.pos + n + 0] = L':'; + e->buf[tab.pos + n + 1] = L' '; + } else if (tab.suffix && tab.pos >= 2 && e->buf[tab.pos - 2] == L':') { + tab.len += 2; + error = editReserve(e, tab.pos, tab.len); + if (error) goto fail; + e->buf[tab.pos - 2] = L','; + e->buf[tab.pos + n + 0] = L':'; + e->buf[tab.pos + n + 1] = L' '; + } else { + tab.len++; + error = editReserve(e, tab.pos, tab.len); + if (error) goto fail; + if (!tab.suffix && tab.pos >= 2 && e->buf[tab.pos - 2] == L',') { + e->buf[tab.pos - 2] = L':'; + } + e->buf[tab.pos + n] = L' '; + } + wmemcpy(&e->buf[tab.pos], wcs, n); + e->pos = tab.pos + tab.len; + free(wcs); + return 0; + +fail: + free(wcs); + return -1; +} + +static void tabAccept(void) { + completeAccept(); + tab.len = 0; +} + +static void tabReject(void) { + completeReject(); + tab.len = 0; +} + static void inputEnter(void) { char *cmd = editString(&edit); if (!cmd) err(EX_OSERR, "editString"); + tabAccept(); command(windowID(), cmd); editFn(&edit, EditClear); } @@ -342,6 +440,7 @@ static void keyCtrl(wchar_t ch) { break; case L'E': error = editFn(&edit, EditTail); break; case L'F': error = editFn(&edit, EditNext); break; case L'H': error = editFn(&edit, EditDeletePrev); + break; case L'I': error = tabComplete(&edit, windowID()); break; case L'J': inputEnter(); break; case L'K': error = editFn(&edit, EditDeleteTail); break; case L'L': clearok(curscr, true); @@ -353,7 +452,7 @@ static void keyCtrl(wchar_t ch) { break; case L'U': error = editFn(&edit, EditDeleteHead); break; case L'V': windowScroll(ScrollPage, -1); break; case L'W': error = editFn(&edit, EditDeletePrevWord); - break; case L'X': error = macroExpand(&edit); + break; case L'X': error = macroExpand(&edit); tabAccept(); break; case L'Y': error = editFn(&edit, EditPaste); } if (error) err(EX_OSERR, "editFn"); @@ -415,7 +514,10 @@ void inputRead(void) { wint_t ch; static bool paste, style, literal; for (int ret; ERR != (ret = wget_wch(uiInput, &ch));) { + bool tab = false; + size_t pos = edit.pos; bool spr = uiSpoilerReveal; + if (ret == KEY_CODE_YES && ch == KeyPasteOn) { paste = true; } else if (ret == KEY_CODE_YES && ch == KeyPasteOff) { @@ -436,6 +538,7 @@ void inputRead(void) { } else if (style) { keyStyle(ch); } else if (iswcntrl(ch)) { + tab = (ch == (L'I' ^ L'@')); keyCtrl(ch); } else { int error = editInsert(&edit, ch); @@ -443,6 +546,15 @@ void inputRead(void) { } style = false; literal = false; + + if (!tab) { + if (edit.pos > pos) { + tabAccept(); + } else if (edit.pos < pos) { + tabReject(); + } + } + if (spr) { uiSpoilerReveal = false; windowUpdate(); |