diff options
Diffstat (limited to 'edit.c')
| -rw-r--r-- | edit.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/edit.c b/edit.c index 47478ec..16fa910 100644 --- a/edit.c +++ b/edit.c @@ -16,6 +16,7 @@ #include <assert.h> #include <limits.h> +#include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <wchar.h> @@ -46,14 +47,24 @@ char *editBuffer(size_t *mbsPos) { return mbs; } -static void reserve(size_t index, size_t count) { - if (len + count > Cap) return; +static struct { + wchar_t buf[Cap]; + size_t len; +} cut; + +static bool reserve(size_t index, size_t count) { + if (len + count > Cap) return false; memmove(&buf[index + count], &buf[index], sizeof(*buf) * (len - index)); len += count; + return true; } static void delete(size_t index, size_t count) { if (index + count > len) return; + if (count > 1) { + memcpy(cut.buf, &buf[index], sizeof(*buf) * count); + cut.len = count; + } memmove( &buf[index], &buf[index + count], sizeof(*buf) * (len - index - count) ); @@ -163,10 +174,17 @@ void edit(size_t id, enum Edit op, wchar_t ch) { while (word < len && buf[word] != L' ') word++; delete(pos, word - pos); } + break; case EditPaste: { + if (reserve(pos, cut.len)) { + memcpy(&buf[pos], cut.buf, sizeof(*buf) * cut.len); + pos += cut.len; + } + } break; case EditInsert: { - reserve(pos, 1); - if (pos < Cap) buf[pos++] = ch; + if (reserve(pos, 1)) { + buf[pos++] = ch; + } } break; case EditComplete: { tabComplete(id); |