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-rw-r--r--demo.c3
-rw-r--r--termkey.c86
-rw-r--r--termkey.h17
3 files changed, 54 insertions, 52 deletions
diff --git a/demo.c b/demo.c
index 512a99f..540861d 100644
--- a/demo.c
+++ b/demo.c
@@ -20,9 +20,10 @@ int main(int argc, char *argv[]) {
termkey_t *tk = termkey_new(0, TERMKEY_FLAG_CONVERTKP);
+ termkey_result ret;
termkey_key key;
- while(termkey_waitkey(tk, &key) && key.code != TERMKEY_SYM_EOF) {
+ while((ret = termkey_waitkey(tk, &key)) != TERMKEY_RES_EOF) {
if(key.flags & TERMKEY_KEYFLAG_SPECIAL)
printf("Key %s%s%s%s (code %d)\n",
key.modifiers & TERMKEY_KEYMOD_SHIFT ? "S-" : "",
diff --git a/termkey.c b/termkey.c
index ef72cbf..73ca994 100644
--- a/termkey.c
+++ b/termkey.c
@@ -44,7 +44,7 @@ static inline void eatbytes(termkey_t *tk, size_t count)
tk->buffvalid -= count;
}
-static int getkey_csi(termkey_t *tk, size_t introlen, termkey_key *key)
+static termkey_result getkey_csi(termkey_t *tk, size_t introlen, termkey_key *key)
{
size_t csi_end = introlen;
@@ -54,10 +54,8 @@ static int getkey_csi(termkey_t *tk, size_t introlen, termkey_key *key)
csi_end++;
}
- if(csi_end >= tk->buffvalid) {
- key->code = TERMKEY_SYM_NONE;
- return key->code;
- }
+ if(csi_end >= tk->buffvalid)
+ return TERMKEY_RES_NONE;
unsigned char cmd = tk->buffer[csi_end];
int arg1 = -1;
@@ -85,7 +83,7 @@ static int getkey_csi(termkey_t *tk, size_t introlen, termkey_key *key)
}
}
- key->code = TERMKEY_SYM_UNKNOWN;
+ eatbytes(tk, csi_end + 1);
switch(cmd) {
case 'A': key->code = TERMKEY_SYM_UP; break;
@@ -118,31 +116,29 @@ static int getkey_csi(termkey_t *tk, size_t introlen, termkey_key *key)
default:
fprintf(stderr, "CSI function key %d\n", arg1);
+ key->code = TERMKEY_SYM_UNKNOWN;
}
break;
default:
fprintf(stderr, "CSI arg1=%d arg2=%d cmd=%c\n", arg1, arg2, cmd);
+ key->code = TERMKEY_SYM_UNKNOWN;
}
key->modifiers = arg2 == -1 ? 0 : arg2 - 1;
key->flags = TERMKEY_KEYFLAG_SPECIAL;
- eatbytes(tk, csi_end + 1);
-
- return key->code;
+ return TERMKEY_RES_KEY;
}
-static int getkey_ss3(termkey_t *tk, size_t introlen, termkey_key *key)
+static termkey_result getkey_ss3(termkey_t *tk, size_t introlen, termkey_key *key)
{
- if(introlen + 1 < tk->buffvalid) {
- key->code = TERMKEY_SYM_NONE;
- return key->code;
- }
+ if(introlen + 1 < tk->buffvalid)
+ return TERMKEY_RES_NONE;
unsigned char cmd = tk->buffer[introlen];
- key->code = TERMKEY_SYM_UNKNOWN;
+ eatbytes(tk, introlen + 1);
switch(cmd) {
case 'A': key->code = TERMKEY_SYM_UP; break;
@@ -176,7 +172,7 @@ static int getkey_ss3(termkey_t *tk, size_t introlen, termkey_key *key)
default:
fprintf(stderr, "SS3 %c (0x%02x)\n", cmd, cmd);
- break;
+ key->code = TERMKEY_SYM_UNKNOWN;
}
key->modifiers = 0;
@@ -216,17 +212,13 @@ static int getkey_ss3(termkey_t *tk, size_t introlen, termkey_key *key)
}
}
- eatbytes(tk, introlen + 1);
-
- return key->code;
+ return TERMKEY_RES_KEY;
}
-int termkey_getkey(termkey_t *tk, termkey_key *key)
+termkey_result termkey_getkey(termkey_t *tk, termkey_key *key)
{
- if(tk->buffvalid == 0) {
- key->code = tk->is_closed ? TERMKEY_SYM_EOF : TERMKEY_SYM_NONE;
- return key->code;
- }
+ if(tk->buffvalid == 0)
+ return tk->is_closed ? TERMKEY_RES_EOF : TERMKEY_RES_NONE;
// Now we're sure at least 1 byte is valid
unsigned char b0 = tk->buffer[0];
@@ -239,7 +231,7 @@ int termkey_getkey(termkey_t *tk, termkey_key *key)
eatbytes(tk, 1);
- return key->code;
+ return TERMKEY_RES_KEY;
}
unsigned char b1 = tk->buffer[1];
@@ -251,19 +243,26 @@ int termkey_getkey(termkey_t *tk, termkey_key *key)
tk->buffer++;
- int metakey = termkey_getkey(tk, key);
- if(metakey != TERMKEY_SYM_NONE) {
- key->modifiers |= TERMKEY_KEYMOD_ALT;
- tk->buffer--;
- eatbytes(tk, 1);
+ termkey_result metakey_result = termkey_getkey(tk, key);
+
+ switch(metakey_result) {
+ case TERMKEY_RES_KEY:
+ key->modifiers |= TERMKEY_KEYMOD_ALT;
+ tk->buffer--;
+ eatbytes(tk, 1);
+ break;
+
+ case TERMKEY_RES_NONE:
+ case TERMKEY_RES_EOF:
+ break;
}
- return key->code;
+ return metakey_result;
}
else if(b0 < 0x20) {
// Control key
- key->code = TERMKEY_SYM_UNKNOWN;
+ key->code = 0;
if(!(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
// Try to interpret C0 codes that have nice names
@@ -274,7 +273,7 @@ int termkey_getkey(termkey_t *tk, termkey_key *key)
}
}
- if(key->code == TERMKEY_SYM_UNKNOWN) {
+ if(!key->code) {
key->code = b0 + 0x40;
key->modifiers = TERMKEY_KEYMOD_CTRL;
key->flags = 0;
@@ -289,7 +288,7 @@ int termkey_getkey(termkey_t *tk, termkey_key *key)
eatbytes(tk, 1);
- return key->code;
+ return TERMKEY_RES_KEY;
}
else if(b0 == 0x20 && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
key->code = TERMKEY_SYM_SPACE;
@@ -298,7 +297,7 @@ int termkey_getkey(termkey_t *tk, termkey_key *key)
eatbytes(tk, 1);
- return key->code;
+ return TERMKEY_RES_KEY;
}
else if(b0 == 0x7f && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
key->code = TERMKEY_SYM_DEL;
@@ -307,7 +306,7 @@ int termkey_getkey(termkey_t *tk, termkey_key *key)
eatbytes(tk, 1);
- return key->code;
+ return TERMKEY_RES_KEY;
}
else if(b0 >= 0x20 && b0 < 0x80) {
// ASCII lowbyte range
@@ -320,17 +319,17 @@ int termkey_getkey(termkey_t *tk, termkey_key *key)
eatbytes(tk, 1);
- return key->code;
+ return TERMKEY_RES_KEY;
}
fprintf(stderr, "TODO - tk->buffer[0] == 0x%02x\n", tk->buffer[0]);
return TERMKEY_SYM_NONE;
}
-int termkey_waitkey(termkey_t *tk, termkey_key *key)
+termkey_result termkey_waitkey(termkey_t *tk, termkey_key *key)
{
- int ret;
- while((ret = termkey_getkey(tk, key)) == TERMKEY_SYM_NONE) {
+ termkey_result ret;
+ while((ret = termkey_getkey(tk, key)) == TERMKEY_RES_NONE) {
termkey_advisereadable(tk);
}
@@ -362,7 +361,7 @@ void termkey_advisereadable(termkey_t *tk)
// Must be kept synchronised with enum termkey_sym_e in termkey.h
const char *keynames[] = {
- "None",
+ "NONE",
// Special names in C0
"Backspace",
@@ -425,10 +424,7 @@ const char *keynames[] = {
const char *termkey_describe_sym(int code)
{
- if(code == -1)
- return "EOF";
-
- if(code == -2)
+ if(code == TERMKEY_SYM_UNKNOWN)
return "UNKNOWN";
if(code < sizeof(keynames)/sizeof(keynames[0]))
diff --git a/termkey.h b/termkey.h
index a99e428..202fff6 100644
--- a/termkey.h
+++ b/termkey.h
@@ -5,9 +5,8 @@
#include <stdlib.h>
typedef enum {
- TERMKEY_SYM_EOF = -1, // Stream closed
- TERMKEY_SYM_UNKNOWN = -2,
- TERMKEY_SYM_NONE = 0, // Did not find a key
+ TERMKEY_SYM_UNKNOWN = -1,
+ TERMKEY_SYM_NONE = 0,
// Special names in C0
TERMKEY_SYM_BACKSPACE,
@@ -68,7 +67,13 @@ typedef enum {
TERMKEY_SYM_KPEQUALS,
// et cetera ad nauseum
-} termkey_sym_e;
+} termkey_sym;
+
+typedef enum {
+ TERMKEY_RES_NONE,
+ TERMKEY_RES_KEY,
+ TERMKEY_RES_EOF,
+} termkey_result;
enum {
TERMKEY_KEYFLAG_SPECIAL = 0x01, // 'code' is a special keycode, not a unicode codepoint
@@ -100,8 +105,8 @@ enum {
termkey_t *termkey_new(int fd, int flags);
void termkey_free(termkey_t *tk);
-int termkey_getkey(termkey_t *tk, termkey_key *key);
-int termkey_waitkey(termkey_t *tk, termkey_key *key);
+termkey_result termkey_getkey(termkey_t *tk, termkey_key *key);
+termkey_result termkey_waitkey(termkey_t *tk, termkey_key *key);
void termkey_pushinput(termkey_t *tk, unsigned char *input, size_t inputlen);
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-01 03:45:56 +0000