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Moved all of the C0 registration and 'do_codepoint' logic out of driver-csi back into termkey via another protected method 'emit_codepoint'

This commit is contained in:
Paul LeoNerd Evans 2008-10-08 00:12:41 +01:00
parent 8407c53726
commit d46f72fc1a
3 changed files with 148 additions and 146 deletions
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156
driver-csi.c
View File

@ -4,19 +4,9 @@
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
struct keyinfo {
termkey_type type;
termkey_keysym sym;
int modifier_mask;
int modifier_set;
};
typedef struct { typedef struct {
termkey_t *tk; termkey_t *tk;
// There are 32 C0 codes
struct keyinfo c0[32];
// There are 64 codes 0x40 - 0x7F // There are 64 codes 0x40 - 0x7F
struct keyinfo csi_ss3s[64]; struct keyinfo csi_ss3s[64];
struct keyinfo ss3s[64]; struct keyinfo ss3s[64];
@ -26,12 +16,10 @@ typedef struct {
struct keyinfo *csifuncs; struct keyinfo *csifuncs;
} termkey_csi; } termkey_csi;
static termkey_keysym register_c0(termkey_csi *csi, termkey_keysym sym, unsigned char ctrl, const char *name);
static termkey_keysym register_csi_ss3(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name); static termkey_keysym register_csi_ss3(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name);
static termkey_keysym register_ss3kpalt(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name, char kpalt); static termkey_keysym register_ss3kpalt(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name, char kpalt);
static termkey_keysym register_csifunc(termkey_csi *csi, termkey_type type, termkey_keysym sym, int number, const char *name); static termkey_keysym register_csifunc(termkey_csi *csi, termkey_type type, termkey_keysym sym, int number, const char *name);
static termkey_keysym register_c0_full(termkey_csi *csi, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char ctrl, const char *name);
static termkey_keysym register_csi_ss3_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name); static termkey_keysym register_csi_ss3_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name);
static termkey_keysym register_ss3kpalt_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name, char kpalt); static termkey_keysym register_ss3kpalt_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name, char kpalt);
static termkey_keysym register_csifunc_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, int number, const char *name); static termkey_keysym register_csifunc_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, int number, const char *name);
@ -44,10 +32,6 @@ static void *new_driver(termkey_t *tk)
int i; int i;
for(i = 0; i < 32; i++) {
csi->c0[i].sym = TERMKEY_SYM_UNKNOWN;
}
for(i = 0; i < 64; i++) { for(i = 0; i < 64; i++) {
csi->csi_ss3s[i].sym = TERMKEY_SYM_UNKNOWN; csi->csi_ss3s[i].sym = TERMKEY_SYM_UNKNOWN;
csi->ss3s[i].sym = TERMKEY_SYM_UNKNOWN; csi->ss3s[i].sym = TERMKEY_SYM_UNKNOWN;
@ -61,11 +45,6 @@ static void *new_driver(termkey_t *tk)
for(i = 0; i < csi->ncsifuncs; i++) for(i = 0; i < csi->ncsifuncs; i++)
csi->csifuncs[i].sym = TERMKEY_SYM_UNKNOWN; csi->csifuncs[i].sym = TERMKEY_SYM_UNKNOWN;
register_c0(csi, TERMKEY_SYM_BACKSPACE, 0x08, "Backspace");
register_c0(csi, TERMKEY_SYM_TAB, 0x09, "Tab");
register_c0(csi, TERMKEY_SYM_ENTER, 0x0d, "Enter");
register_c0(csi, TERMKEY_SYM_ESCAPE, 0x1b, "Escape");
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_UP, 'A', "Up"); register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_UP, 'A', "Up");
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_DOWN, 'B', "Down"); register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_DOWN, 'B', "Down");
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_RIGHT, 'C', "Right"); register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_RIGHT, 'C', "Right");
@ -143,99 +122,6 @@ static void free_driver(void *private)
#define UTF8_INVALID 0xFFFD #define UTF8_INVALID 0xFFFD
static int utf8_seqlen(int codepoint)
{
if(codepoint < 0x0000080) return 1;
if(codepoint < 0x0000800) return 2;
if(codepoint < 0x0010000) return 3;
if(codepoint < 0x0200000) return 4;
if(codepoint < 0x4000000) return 5;
return 6;
}
static void fill_utf8(termkey_key *key)
{
int codepoint = key->code.codepoint;
int nbytes = utf8_seqlen(codepoint);
key->utf8[nbytes] = 0;
// This is easier done backwards
int b = nbytes;
while(b > 1) {
b--;
key->utf8[b] = 0x80 | (codepoint & 0x3f);
codepoint >>= 6;
}
switch(nbytes) {
case 1: key->utf8[0] = (codepoint & 0x7f); break;
case 2: key->utf8[0] = 0xc0 | (codepoint & 0x1f); break;
case 3: key->utf8[0] = 0xe0 | (codepoint & 0x0f); break;
case 4: key->utf8[0] = 0xf0 | (codepoint & 0x07); break;
case 5: key->utf8[0] = 0xf8 | (codepoint & 0x03); break;
case 6: key->utf8[0] = 0xfc | (codepoint & 0x01); break;
}
}
static inline void do_codepoint(termkey_t *tk, int codepoint, termkey_key *key)
{
termkey_csi *csi = tk->driver_info;
if(codepoint < 0x20) {
// C0 range
key->code.codepoint = 0;
key->modifiers = 0;
if(!(tk->flags & TERMKEY_FLAG_NOINTERPRET) && csi->c0[codepoint].sym != TERMKEY_SYM_UNKNOWN) {
key->code.sym = csi->c0[codepoint].sym;
key->modifiers |= csi->c0[codepoint].modifier_set;
}
if(!key->code.sym) {
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = codepoint + 0x40;
key->modifiers = TERMKEY_KEYMOD_CTRL;
}
else {
key->type = TERMKEY_TYPE_KEYSYM;
}
}
else if(codepoint == 0x20 && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
// ASCII space
key->type = TERMKEY_TYPE_KEYSYM;
key->code.sym = TERMKEY_SYM_SPACE;
key->modifiers = 0;
}
else if(codepoint == 0x7f && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
// ASCII DEL
key->type = TERMKEY_TYPE_KEYSYM;
key->code.sym = TERMKEY_SYM_DEL;
key->modifiers = 0;
}
else if(codepoint >= 0x20 && codepoint < 0x80) {
// ASCII lowbyte range
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = codepoint;
key->modifiers = 0;
}
else if(codepoint >= 0x80 && codepoint < 0xa0) {
// UTF-8 never starts with a C1 byte. So we can be sure of these
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = codepoint - 0x40;
key->modifiers = TERMKEY_KEYMOD_CTRL|TERMKEY_KEYMOD_ALT;
}
else {
// UTF-8 codepoint
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = codepoint;
key->modifiers = 0;
}
if(key->type == TERMKEY_TYPE_UNICODE)
fill_utf8(key);
}
#define CHARAT(i) (tk->buffer[tk->buffstart + (i)]) #define CHARAT(i) (tk->buffer[tk->buffstart + (i)])
static termkey_result 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)
@ -254,7 +140,7 @@ static termkey_result getkey_csi(termkey_t *tk, size_t introlen, termkey_key *ke
if(tk->waittime) if(tk->waittime)
return TERMKEY_RES_AGAIN; return TERMKEY_RES_AGAIN;
do_codepoint(tk, '[', key); (*tk->method.emit_codepoint)(tk, '[', key);
key->modifiers |= TERMKEY_KEYMOD_ALT; key->modifiers |= TERMKEY_KEYMOD_ALT;
(*tk->method.eat_bytes)(tk, introlen); (*tk->method.eat_bytes)(tk, introlen);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
@ -310,7 +196,7 @@ static termkey_result getkey_csi(termkey_t *tk, size_t introlen, termkey_key *ke
if(arg[0] == 27) { if(arg[0] == 27) {
int mod = key->modifiers; int mod = key->modifiers;
do_codepoint(tk, arg[2], key); (*tk->method.emit_codepoint)(tk, arg[2], key);
key->modifiers |= mod; key->modifiers |= mod;
} }
else if(arg[0] >= 0 && arg[0] < csi->ncsifuncs) { else if(arg[0] >= 0 && arg[0] < csi->ncsifuncs) {
@ -347,7 +233,7 @@ static termkey_result getkey_ss3(termkey_t *tk, size_t introlen, termkey_key *ke
if(tk->waittime) if(tk->waittime)
return TERMKEY_RES_AGAIN; return TERMKEY_RES_AGAIN;
do_codepoint(tk, 'O', key); (*tk->method.emit_codepoint)(tk, 'O', key);
key->modifiers |= TERMKEY_KEYMOD_ALT; key->modifiers |= TERMKEY_KEYMOD_ALT;
(*tk->method.eat_bytes)(tk, tk->buffcount); (*tk->method.eat_bytes)(tk, tk->buffcount);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
@ -402,7 +288,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
if(tk->waittime) if(tk->waittime)
return TERMKEY_RES_AGAIN; return TERMKEY_RES_AGAIN;
do_codepoint(tk, b0, key); (*tk->method.emit_codepoint)(tk, b0, key);
(*tk->method.eat_bytes)(tk, 1); (*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
} }
@ -416,7 +302,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
return getkey_ss3(tk, 2, key); return getkey_ss3(tk, 2, key);
if(b1 == 0x1b) { if(b1 == 0x1b) {
do_codepoint(tk, b0, key); (*tk->method.emit_codepoint)(tk, b0, key);
(*tk->method.eat_bytes)(tk, 1); (*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
} }
@ -448,7 +334,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
} }
else if(b0 < 0xa0) { else if(b0 < 0xa0) {
// Single byte C0, G0 or C1 - C1 is never UTF-8 initial byte // Single byte C0, G0 or C1 - C1 is never UTF-8 initial byte
do_codepoint(tk, b0, key); (*tk->method.emit_codepoint)(tk, b0, key);
(*tk->method.eat_bytes)(tk, 1); (*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
} }
@ -462,7 +348,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
if(b0 < 0xc0) { if(b0 < 0xc0) {
// Starts with a continuation byte - that's not right // Starts with a continuation byte - that's not right
do_codepoint(tk, UTF8_INVALID, key); (*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
(*tk->method.eat_bytes)(tk, 1); (*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
} }
@ -487,7 +373,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
codepoint = b0 & 0x01; codepoint = b0 & 0x01;
} }
else { else {
do_codepoint(tk, UTF8_INVALID, key); (*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
(*tk->method.eat_bytes)(tk, 1); (*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
} }
@ -498,7 +384,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
for(int b = 1; b < nbytes; b++) { for(int b = 1; b < nbytes; b++) {
unsigned char cb = CHARAT(b); unsigned char cb = CHARAT(b);
if(cb < 0x80 || cb >= 0xc0) { if(cb < 0x80 || cb >= 0xc0) {
do_codepoint(tk, UTF8_INVALID, key); (*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
(*tk->method.eat_bytes)(tk, b - 1); (*tk->method.eat_bytes)(tk, b - 1);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
} }
@ -517,7 +403,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
codepoint == 0xFFFF) codepoint == 0xFFFF)
codepoint = UTF8_INVALID; codepoint = UTF8_INVALID;
do_codepoint(tk, codepoint, key); (*tk->method.emit_codepoint)(tk, codepoint, key);
(*tk->method.eat_bytes)(tk, nbytes); (*tk->method.eat_bytes)(tk, nbytes);
return TERMKEY_RES_KEY; return TERMKEY_RES_KEY;
} }
@ -538,28 +424,6 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
return TERMKEY_SYM_NONE; return TERMKEY_SYM_NONE;
} }
static termkey_keysym register_c0(termkey_csi *csi, termkey_keysym sym, unsigned char ctrl, const char *name)
{
return register_c0_full(csi, sym, 0, 0, ctrl, name);
}
static termkey_keysym register_c0_full(termkey_csi *csi, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char ctrl, const char *name)
{
if(ctrl >= 0x20) {
fprintf(stderr, "Cannot register C0 key at ctrl 0x%02x - out of bounds\n", ctrl);
return -1;
}
if(name)
sym = termkey_register_keyname(csi->tk, sym, name);
csi->c0[ctrl].sym = sym;
csi->c0[ctrl].modifier_set = modifier_set;
csi->c0[ctrl].modifier_mask = modifier_mask;
return sym;
}
static termkey_keysym register_csi_ss3(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name) static termkey_keysym register_csi_ss3(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name)
{ {
return register_csi_ss3_full(csi, type, sym, 0, 0, cmd, name); return register_csi_ss3_full(csi, type, sym, 0, 0, cmd, name);

22
termkey-internal.h
View File

@ -13,6 +13,13 @@ struct termkey_driver
termkey_result (*getkey)(termkey_t *tk, termkey_key *key); termkey_result (*getkey)(termkey_t *tk, termkey_key *key);
}; };
struct keyinfo {
termkey_type type;
termkey_keysym sym;
int modifier_mask;
int modifier_set;
};
struct termkey { struct termkey {
int fd; int fd;
int flags; int flags;
@ -31,6 +38,9 @@ struct termkey {
int nkeynames; int nkeynames;
const char **keynames; const char **keynames;
// There are 32 C0 codes
struct keyinfo c0[32];
struct termkey_driver driver; struct termkey_driver driver;
void *driver_info; void *driver_info;
@ -38,9 +48,21 @@ struct termkey {
// want exported as real symbols in the library // want exported as real symbols in the library
struct { struct {
void (*eat_bytes)(termkey_t *tk, size_t count); void (*eat_bytes)(termkey_t *tk, size_t count);
void (*emit_codepoint)(termkey_t *tk, int codepoint, termkey_key *key);
} method; } method;
}; };
extern struct termkey_driver termkey_driver_csi; extern struct termkey_driver termkey_driver_csi;
// Keep this here for now since it's tiny
static inline int utf8_seqlen(int codepoint)
{
if(codepoint < 0x0000080) return 1;
if(codepoint < 0x0000800) return 2;
if(codepoint < 0x0010000) return 3;
if(codepoint < 0x0200000) return 4;
if(codepoint < 0x4000000) return 5;
return 6;
}
#endif #endif

116
termkey.c
View File

@ -15,6 +15,10 @@ static struct termkey_driver *drivers[] = {
// Forwards for the "protected" methods // Forwards for the "protected" methods
static void eat_bytes(termkey_t *tk, size_t count); static void eat_bytes(termkey_t *tk, size_t count);
static void emit_codepoint(termkey_t *tk, int codepoint, termkey_key *key);
static termkey_keysym register_c0(termkey_t *tk, termkey_keysym sym, unsigned char ctrl, const char *name);
static termkey_keysym register_c0_full(termkey_t *tk, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char ctrl, const char *name);
termkey_t *termkey_new_full(int fd, int flags, size_t buffsize, int waittime) termkey_t *termkey_new_full(int fd, int flags, size_t buffsize, int waittime)
{ {
@ -67,7 +71,16 @@ termkey_t *termkey_new_full(int fd, int flags, size_t buffsize, int waittime)
for(i = 0; i < tk->nkeynames; i++) for(i = 0; i < tk->nkeynames; i++)
tk->keynames[i] = NULL; tk->keynames[i] = NULL;
for(i = 0; i < 32; i++)
tk->c0[i].sym = TERMKEY_SYM_NONE;
tk->method.eat_bytes = &eat_bytes; tk->method.eat_bytes = &eat_bytes;
tk->method.emit_codepoint = &emit_codepoint;
register_c0(tk, TERMKEY_SYM_BACKSPACE, 0x08, "Backspace");
register_c0(tk, TERMKEY_SYM_TAB, 0x09, "Tab");
register_c0(tk, TERMKEY_SYM_ENTER, 0x0d, "Enter");
register_c0(tk, TERMKEY_SYM_ESCAPE, 0x1b, "Escape");
for(i = 0; drivers[i]; i++) { for(i = 0; drivers[i]; i++) {
void *driver_info = (*drivers[i]->new_driver)(tk); void *driver_info = (*drivers[i]->new_driver)(tk);
@ -157,6 +170,87 @@ static void eat_bytes(termkey_t *tk, size_t count)
} }
} }
static void fill_utf8(termkey_key *key)
{
int codepoint = key->code.codepoint;
int nbytes = utf8_seqlen(codepoint);
key->utf8[nbytes] = 0;
// This is easier done backwards
int b = nbytes;
while(b > 1) {
b--;
key->utf8[b] = 0x80 | (codepoint & 0x3f);
codepoint >>= 6;
}
switch(nbytes) {
case 1: key->utf8[0] = (codepoint & 0x7f); break;
case 2: key->utf8[0] = 0xc0 | (codepoint & 0x1f); break;
case 3: key->utf8[0] = 0xe0 | (codepoint & 0x0f); break;
case 4: key->utf8[0] = 0xf0 | (codepoint & 0x07); break;
case 5: key->utf8[0] = 0xf8 | (codepoint & 0x03); break;
case 6: key->utf8[0] = 0xfc | (codepoint & 0x01); break;
}
}
static void emit_codepoint(termkey_t *tk, int codepoint, termkey_key *key)
{
if(codepoint < 0x20) {
// C0 range
key->code.codepoint = 0;
key->modifiers = 0;
if(!(tk->flags & TERMKEY_FLAG_NOINTERPRET) && tk->c0[codepoint].sym != TERMKEY_SYM_UNKNOWN) {
key->code.sym = tk->c0[codepoint].sym;
key->modifiers |= tk->c0[codepoint].modifier_set;
}
if(!key->code.sym) {
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = codepoint + 0x40;
key->modifiers = TERMKEY_KEYMOD_CTRL;
}
else {
key->type = TERMKEY_TYPE_KEYSYM;
}
}
else if(codepoint == 0x20 && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
// ASCII space
key->type = TERMKEY_TYPE_KEYSYM;
key->code.sym = TERMKEY_SYM_SPACE;
key->modifiers = 0;
}
else if(codepoint == 0x7f && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
// ASCII DEL
key->type = TERMKEY_TYPE_KEYSYM;
key->code.sym = TERMKEY_SYM_DEL;
key->modifiers = 0;
}
else if(codepoint >= 0x20 && codepoint < 0x80) {
// ASCII lowbyte range
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = codepoint;
key->modifiers = 0;
}
else if(codepoint >= 0x80 && codepoint < 0xa0) {
// UTF-8 never starts with a C1 byte. So we can be sure of these
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = codepoint - 0x40;
key->modifiers = TERMKEY_KEYMOD_CTRL|TERMKEY_KEYMOD_ALT;
}
else {
// UTF-8 codepoint
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = codepoint;
key->modifiers = 0;
}
if(key->type == TERMKEY_TYPE_UNICODE)
fill_utf8(key);
}
termkey_result termkey_getkey(termkey_t *tk, termkey_key *key) termkey_result termkey_getkey(termkey_t *tk, termkey_key *key)
{ {
return (*tk->driver.getkey)(tk, key); return (*tk->driver.getkey)(tk, key);
@ -273,6 +367,28 @@ const char *termkey_get_keyname(termkey_t *tk, termkey_keysym sym)
return "UNKNOWN"; return "UNKNOWN";
} }
static termkey_keysym register_c0(termkey_t *tk, termkey_keysym sym, unsigned char ctrl, const char *name)
{
return register_c0_full(tk, sym, 0, 0, ctrl, name);
}
static termkey_keysym register_c0_full(termkey_t *tk, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char ctrl, const char *name)
{
if(ctrl >= 0x20) {
fprintf(stderr, "Cannot register C0 key at ctrl 0x%02x - out of bounds\n", ctrl);
return -1;
}
if(name)
sym = termkey_register_keyname(tk, sym, name);
tk->c0[ctrl].sym = sym;
tk->c0[ctrl].modifier_set = modifier_set;
tk->c0[ctrl].modifier_mask = modifier_mask;
return sym;
}
size_t termkey_snprint_key(termkey_t *tk, char *buffer, size_t len, termkey_key *key, termkey_format format) size_t termkey_snprint_key(termkey_t *tk, char *buffer, size_t len, termkey_key *key, termkey_format format)
{ {
size_t pos = 0; size_t pos = 0;