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CE Improve line editing logic, add KB_DELETE
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Kamil Kowalczyk
2026-03-04 02:50:13 +01:00
parent 156ac10dcd
commit 0897f08212
1 changed files with 29 additions and 15 deletions
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44
ce/ce.c
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@@ -17,8 +17,9 @@
#include <tcursor.h> #include <tcursor.h>
#include <tscreen.h> #include <tscreen.h>
#define LINE_INIT_MAX 40 #define LINE_INIT_MAX 40
#define PROMPT "$ " #define LINE_TAIL_BATCH_MAX 1024
#define PROMPT "$ "
struct edit_line { struct edit_line {
struct gapbuffer gb; struct gapbuffer gb;
@@ -55,18 +56,32 @@ void app_main (void) {
if (ch == '\n') if (ch == '\n')
break; break;
gapbuffer_move (&edit_line.gb, edit_line.cursor);
switch (ch) { switch (ch) {
case '\b': case '\b':
if (edit_line.cursor > 0) { if (edit_line.cursor > 0) {
gapbuffer_backspace (&edit_line.gb);
edit_line.cursor--; edit_line.cursor--;
gapbuffer_backspace (&edit_line.gb);
mprintf ("\b"); mprintf (ANSIQ_CUR_LEFT (1));
char* tail = gapbuffer_string_at (&edit_line.gb, edit_line.cursor); char* tail = gapbuffer_string_at (&edit_line.gb, edit_line.cursor);
mprintf ("%s" ANSIQ_SCR_CLR2END, tail); mprintf ("%s" ANSIQ_SCR_CLR2LEND, tail);
int move_back = (int)strlen (tail); int move_back = strlen (tail);
if (move_back > 0)
mprintf (ANSIQ_DYN_CUR_LEFT, move_back);
}
break;
case KB_DELETE:
if (edit_line.cursor < gapbuffer_length (&edit_line.gb)) {
edit_line.gb.gap_end++;
char* tail = gapbuffer_string_at (&edit_line.gb, edit_line.cursor);
mprintf ("%s" ANSIQ_SCR_CLR2LEND, tail);
int move_back = strlen (tail);
if (move_back > 0) if (move_back > 0)
mprintf (ANSIQ_DYN_CUR_LEFT, move_back); mprintf (ANSIQ_DYN_CUR_LEFT, move_back);
} }
@@ -84,21 +99,20 @@ void app_main (void) {
} }
break; break;
default: default:
if (isascii (ch)) { if (isprint (ch)) {
gapbuffer_insert (&edit_line.gb, ch); gapbuffer_insert (&edit_line.gb, ch);
edit_line.cursor++; edit_line.cursor++;
char* tail = gapbuffer_string_at (&edit_line.gb, edit_line.cursor - 1); if (edit_line.cursor == gapbuffer_length (&edit_line.gb)) {
mprintf ("%s" ANSIQ_SCR_CLR2LEND, tail); mprintf ("%c", ch);
} else {
int move_back = (int)strlen (tail) - 1; char* tail = gapbuffer_string_at (&edit_line.gb, edit_line.cursor - 1);
if (move_back > 0) size_t move_back = strlen (tail) - 1;
mprintf (ANSIQ_DYN_CUR_LEFT, move_back); mprintf ("%s" ANSIQ_DYN_CUR_LEFT, tail, move_back);
}
} }
break; break;
} }
gapbuffer_move (&edit_line.gb, edit_line.cursor);
} }
mprintf ("\n"); mprintf ("\n");