aboutsummaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/crypto.h3
-rw-r--r--src/hash/blake2.c261
-rw-r--r--src/hash/blake2.h21
-rw-r--r--src/types/map.c268
-rw-r--r--src/types/map.h58
-rw-r--r--src/types/str.c132
6 files changed, 513 insertions, 230 deletions
diff --git a/src/crypto.h b/src/crypto.h
index e0a29b0..8fd83a5 100644
--- a/src/crypto.h
+++ b/src/crypto.h
@@ -25,6 +25,7 @@
#include "hash/sdbm.h"
#include "hash/sha2-256.h"
#include "hash/spookyhash.h"
+#include "hash/blake2.h"
#include "encode/uuencode.h"
#include "encode/base64.h"
@@ -55,7 +56,7 @@ static const luaL_Reg crypto_function_list [] = {
{"spookyhash128_v1", l_spookyhash128_v1}, {"spookyhash128_v2", l_spookyhash128_v2},
{"spookyhash64_v1", l_spookyhash64_v1}, {"spookyhash64_v2", l_spookyhash64_v2},
{"spookyhash32_v1", l_spookyhash32_v1}, {"spookyhash32_v2", l_spookyhash32_v2},
-
+ {"blake2b", l_blake2b}, {"blake2s", l_blake2s},
{"uuencode",l_uuencode},
diff --git a/src/hash/blake2.c b/src/hash/blake2.c
new file mode 100644
index 0000000..aeb48ad
--- /dev/null
+++ b/src/hash/blake2.c
@@ -0,0 +1,261 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+#include "sha2-256.h"
+#include "blake2.h"
+#include "../util.h"
+
+uint64_t rotr64(uint64_t w, unsigned c){
+ return (w >> c) | (w << (64 - c));
+}
+uint32_t rotr32(uint32_t w, unsigned c){
+ return (w >> c) | (w << (32 - c));
+}
+
+void mix2b(uint64_t* a, uint64_t* b, uint64_t* c, uint64_t* d, int64_t x, int64_t y){
+ *a = *a + *b + x;
+ *d = rotr64((*d ^ *a), 32);
+
+ *c += *d;
+ *b = rotr64((*b ^ *c), 24);
+
+ *a += *b + y;
+ *d = rotr64((*d ^ *a), 16);
+
+ *c += *d;
+ *b = rotr64((*b ^ *c), 63);
+}
+
+void mix2s(uint32_t* a, uint32_t* b, uint32_t* c, uint32_t* d, int32_t x, int32_t y){
+ *a = *a + *b + x;
+ *d = rotr32((*d ^ *a), 16);
+
+ *c += *d;
+ *b = rotr32((*b ^ *c), 12);
+
+ *a += *b + y;
+ *d = rotr32((*d ^ *a), 8);
+
+ *c += *d;
+ *b = rotr32((*b ^ *c), 7);
+}
+
+#define baking(type) \
+ mix2##type(&v[0], &v[4], &v[8], &v[12], m[s[0]], m[s[1]]);\
+ mix2##type(&v[1], &v[5], &v[9], &v[13], m[s[2]], m[s[3]]);\
+ mix2##type(&v[2], &v[6], &v[10], &v[14], m[s[4]], m[s[5]]);\
+ mix2##type(&v[3], &v[7], &v[11], &v[15], m[s[6]], m[s[7]]);\
+ \
+ mix2##type(&v[0], &v[5], &v[10], &v[15], m[s[8]], m[s[9]]);\
+ mix2##type(&v[1], &v[6], &v[11], &v[12], m[s[10]], m[s[11]]);\
+ mix2##type(&v[2], &v[7], &v[8], &v[13], m[s[12]], m[s[13]]);\
+ mix2##type(&v[3], &v[4], &v[9], &v[14], m[s[14]], m[s[15]]);
+
+void compress2b(uint64_t* hash, uint8_t* inp, uint64_t compressed, int final){
+ uint64_t v[16], s[16], m[16];
+
+ #pragma unroll
+ for(int i = 0; i != 8; i++)
+ v[i] = hash[i];
+
+ for(int i = 0; i != 16; i++)
+ m[i] = ((uint64_t*)inp)[i];
+
+ v[8] = sha512_iv.h0;
+ v[9] = sha512_iv.h1;
+ v[10] = sha512_iv.h2;
+ v[11] = sha512_iv.h3;
+ v[12] = sha512_iv.h4;
+ v[13] = sha512_iv.h5;
+ v[14] = sha512_iv.h6;
+ v[15] = sha512_iv.h7;
+
+ v[12] ^= compressed;
+ v[13] ^= 0;
+
+ if(final)
+ v[14] ^= 0xFFFFFFFFFFFFFFFF;
+
+ for(int i = 0; i != 12; i++){
+ for(int j = 0; j != 16; j++){
+ s[j] = blake2b_sigma[i%10][j];
+ }
+
+ baking(b);
+ }
+
+ for (int i = 0; i < 8; i++) {
+ hash[i] = hash[i] ^ v[i] ^ v[i + 8];
+ }
+}
+
+void compress2s(uint32_t* hash, uint8_t* inp, uint32_t compressed, int final){
+ uint32_t v[16], s[16], m[16];
+
+ #pragma unroll
+ for(int i = 0; i != 8; i++)
+ v[i] = hash[i];
+
+ for(int i = 0; i != 16; i++)
+ m[i] = ((uint32_t*)inp)[i];
+
+ v[8] = sha512_iv.h0 >> 32;
+ v[9] = sha512_iv.h1 >> 32;
+ v[10] = sha512_iv.h2 >> 32;
+ v[11] = sha512_iv.h3 >> 32;
+ v[12] = sha512_iv.h4 >> 32;
+ v[13] = sha512_iv.h5 >> 32;
+ v[14] = sha512_iv.h6 >> 32;
+ v[15] = sha512_iv.h7 >> 32;
+
+ v[12] ^= compressed; //make this 64bit
+ v[13] ^= 0;
+
+ if(final)
+ v[14] ^= 0xFFFFFFFFFFFFFFFF >> 32;
+
+ for(int i = 0; i != 10; i++){
+ for(int j = 0; j != 16; j++){
+ s[j] = blake2b_sigma[i][j];
+ }
+
+ baking(s);
+ }
+
+ for (int i = 0; i < 8; i++) {
+ hash[i] = hash[i] ^ v[i] ^ v[i + 8];
+ }
+}
+
+void blake2b(char* inp, int inp_len, char* key, int key_len, int dig_len, char* buffer){
+ uint64_t hash[8];
+
+ uint64_t iv0 = hash[0] = sha512_iv.h0;
+ uint64_t iv1 = hash[1] = sha512_iv.h1;
+ uint64_t iv2 = hash[2] = sha512_iv.h2;
+ uint64_t iv3 = hash[3] = sha512_iv.h3;
+ uint64_t iv4 = hash[4] = sha512_iv.h4;
+ uint64_t iv5 = hash[5] = sha512_iv.h5;
+ uint64_t iv6 = hash[6] = sha512_iv.h6;
+ uint64_t iv7 = hash[7] = sha512_iv.h7;
+
+ uint64_t alen = inter(inp_len, 128) + 128;
+
+
+ //add padding
+ char* padded = calloc(alen + (128 * (key_len > 0)), sizeof * padded);
+
+ if(key_len > 0){
+ memcpy(padded, key, key_len);
+ inp_len += 128;
+ }
+
+ memcpy(padded + (128 * (key_len > 0)), inp, inp_len - (128 * (key_len > 0)));
+
+ hash[0] ^= dig_len;
+ hash[0] ^= key_len << 8;
+ hash[0] ^= 0x01010000;
+
+ uint64_t compressed = 0, bytes_remaining = inp_len;
+
+ int i = 0;
+ for(;bytes_remaining > 128; i += 2){
+ bytes_remaining -= 128;
+ compressed += 128;
+
+ compress2b(hash, (uint8_t*)padded, compressed, 0);
+ padded += 128;
+ }
+
+ compressed += bytes_remaining;
+
+ compress2b(hash, (uint8_t*)padded, compressed, 1);
+ for(int i = 0; i != dig_len; i++)sprintf(buffer, "%s%02x", buffer, (((uint8_t*)hash)[i]));
+}
+
+void blake2s(char* inp, int inp_len, char* key, int key_len, int dig_len, char* buffer){
+ uint32_t hash[8];
+
+ uint32_t iv0 = hash[0] = sha512_iv.h0 >> 32;
+ uint32_t iv1 = hash[1] = sha512_iv.h1 >> 32;
+ uint32_t iv2 = hash[2] = sha512_iv.h2 >> 32;
+ uint32_t iv3 = hash[3] = sha512_iv.h3 >> 32;
+ uint32_t iv4 = hash[4] = sha512_iv.h4 >> 32;
+ uint32_t iv5 = hash[5] = sha512_iv.h5 >> 32;
+ uint32_t iv6 = hash[6] = sha512_iv.h6 >> 32;
+ uint32_t iv7 = hash[7] = sha512_iv.h7 >> 32;
+
+ uint32_t alen = inter(inp_len, 64) + 64;
+
+ //add padding
+ char* padded = calloc(alen + (64 * (key_len > 0)), sizeof * padded);
+ if(key_len > 0){
+ memcpy(padded, key, key_len);
+ inp_len += 64;
+ }
+ memcpy(padded + (64 * (key_len > 0)), inp, inp_len - (64 * (key_len > 0)));
+
+ hash[0] ^= dig_len;
+ hash[0] ^= key_len << 8;
+ hash[0] ^= 0x01010000;
+
+ uint64_t compressed = 0, bytes_remaining = inp_len;
+
+ int i = 0;
+ for(;bytes_remaining > 64; i += 2){
+ bytes_remaining -= 64;
+ compressed += 64;
+
+ compress2s(hash, (uint8_t*)padded, compressed, 0);
+ padded += 64;
+ }
+
+ compressed += bytes_remaining;
+
+ compress2s(hash, (uint8_t*)padded, compressed, 1);
+ for(int i = 0; i != dig_len; i++)sprintf(buffer, "%s%02x", buffer, (((uint8_t*)hash)[i]));
+}
+
+int l_blake2b(lua_State* L){
+ size_t len = 0;
+ char* a = (char*)luaL_checklstring(L, 1, &len);
+ int argv = lua_gettop(L);
+
+ uint64_t out_len = 64;
+ if(argv > 1) out_len = luaL_checkinteger(L, 2);
+
+ char* key = NULL;
+ size_t key_len = 0;
+ if(argv > 2) key = (char*)luaL_checklstring(L, 3, &key_len);
+
+ char digest[out_len * 8];
+ memset(digest, 0, out_len * 8);
+
+ blake2b(a, len, key, key_len, out_len, digest);
+ lua_pushstring(L, digest);
+
+ return 1;
+}
+
+int l_blake2s(lua_State* L){
+ size_t len = 0;
+ char* a = (char*)luaL_checklstring(L, 1, &len);
+ int argv = lua_gettop(L);
+
+ uint32_t out_len = 32;
+ if(argv > 1) out_len = luaL_checkinteger(L, 2);
+
+ char* key = NULL;
+ size_t key_len = 0;
+ if(argv > 2) key = (char*)luaL_checklstring(L, 3, &key_len);
+
+ char digest[out_len * 8];
+ memset(digest, 0, out_len * 8);
+
+ blake2s(a, len, key, key_len, out_len, digest);
+ lua_pushstring(L, digest);
+
+ return 1;
+} \ No newline at end of file
diff --git a/src/hash/blake2.h b/src/hash/blake2.h
new file mode 100644
index 0000000..cde04b3
--- /dev/null
+++ b/src/hash/blake2.h
@@ -0,0 +1,21 @@
+#include <stdint.h>
+#include "../lua.h"
+
+static const uint8_t blake2b_sigma[10][16] = {
+ { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
+ { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 },
+ { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 },
+ { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 },
+ { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 },
+ { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 },
+ { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 },
+ { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 },
+ { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 },
+ { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0 },
+};
+
+void blake2s(char*, int, char*, int, int, char*);
+void blake2b(char*, int, char*, int, int, char*);
+
+int l_blake2s(lua_State*);
+int l_blake2b(lua_State*); \ No newline at end of file
diff --git a/src/types/map.c b/src/types/map.c
index cd46537..a15762a 100644
--- a/src/types/map.c
+++ b/src/types/map.c
@@ -1,135 +1,135 @@
-#include "map.h"
-#include "../hash/fnv.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-
-#define mod_inc 4
-
-uint64_t hash(char* c, size_t len){
- return fnv_1((uint8_t*)c, len, v_a);
-}
-
-void map_dump(map_t* M){
- printf("---\n%i %i\n- **\n",M->mod, M->len);
- for(int i = 0; i != M->mod; i++){
- if(M->M[i].used){
- printf("%i | %s : %p\n",i,M->M[i].key->c, M->M[i].value);
- }
- }
-}
-
-map_t* map_initl(size_t len){
- map_t* awa = calloc(sizeof * awa, 1);
- awa->M = calloc(sizeof * awa->M, len);
- //for(int i = 0; i != len; i++) awa->M[i].used = 0;
- awa->len = 0;
- awa->mod = len;
- return awa;
-}
-
-map_t* map_init(){
- return map_initl(4);
-}
-
-void map_expand(map_t** _M){
- map_t* M = *_M;
- map_t* remade = map_initl(M->mod * 4);
- for(int i = 0; i != M->mod; i++){
- //what happens if the map_set calls map_regraph??? idk
- if(M->M[i].used)
- map_set(&remade, M->M[i].key->c, M->M[i].value);
- }
-
- *_M = remade;
-}
-
-void map_set(map_t** _M, char* key, void* value){
- map_t* M = *_M;
- uint64_t h = hash(key, strlen(key));
-
- if(M->len + 1 >= M->mod){
- expand:
- map_expand(&M);
- }
- uint64_t ind = h % M->mod;
- uint64_t oind = ind;
-
- //iterates until there is a free space
- for(int count = 0; M->M[ind].used && M->M[ind].hash != h && strcmp(M->M[ind].key->c, key) != 0; count++){
- ind++;
- if(ind >= M->mod) ind = 0;
- if(ind == oind || count > 10) goto expand;
- }
-
- M->M[ind].hash = h;
- M->M[ind].key = str_init(key);
- M->M[ind].value = value;
- M->M[ind].used = 1;
- M->len++;
-
- *_M = M;
-}
-
-int map_geti(map_t* M, char* key){
- uint64_t h = hash(key, strlen(key));
- uint64_t ind = h % M->mod;
-
- for(uint64_t initial = ind; ind != initial - 1;){
- if(M->M[ind].key == NULL) return -1;
- //printf("%s\n",M->M[ind].key->c);
- if(M->M[ind].hash == h && strcmp(M->M[ind].key->c, key)==0) return ind;
- ind++;
- if(ind >= M->mod) ind = 0;
- }
- return -1;
-}
-
-void* map_get(map_t* M, char* key){
- int r = map_geti(M, key);
- //printf("%i\n",r);
- return r == -1? NULL : M->M[r].value;
-}
-
-void map_remove(map_t* p, char* key, enum free_type free){
- int ind = map_geti(p, key);
- if(ind == -1) return;
- p->M[ind].used = 0;
- p->M[ind].hash = 0;
- str_free(p->M[ind].key);
- free_method(p->M[ind].value, free);
-}
-
-void map_lclear(map_t* M){
- free(M->M);
- free(M);
-}
-
-void map_clear(map_t* M, enum free_type free){
- for(int i = 0; i != M->mod; i++){
- if(M->M[i].used){
- str_free(M->M[i].key);
- free_method(M->M[i].value, free);
- }
- }
- map_lclear(M);
-}
-
-int main(){
- int i = 5;
- int b = 24;
- int c = 9;
- map_t* m = map_init();
-
- map_set(&m, "wowa", &b);
- printf("%i\n",*(int*)map_get(m, "wowa"));
- map_set(&m, "aw", &i);
- map_set(&m, "awc", &i);
- map_set(&m, "awa", &i);
- map_set(&m, "aww", &i);
- printf("%i\n",*(int*)map_get(m, "wowa"));
-
- map_clear(m, NONE);
-
- return 0;
+#include "map.h"
+#include "../hash/fnv.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define mod_inc 4
+
+uint64_t hash(char* c, size_t len){
+ return fnv_1((uint8_t*)c, len, v_a);
+}
+
+void map_dump(map_t* M){
+ printf("---\n%i %i\n- **\n",M->mod, M->len);
+ for(int i = 0; i != M->mod; i++){
+ if(M->M[i].used){
+ printf("%i | %s : %p\n",i,M->M[i].key->c, M->M[i].value);
+ }
+ }
+}
+
+map_t* map_initl(size_t len){
+ map_t* awa = calloc(sizeof * awa, 1);
+ awa->M = calloc(sizeof * awa->M, len);
+ //for(int i = 0; i != len; i++) awa->M[i].used = 0;
+ awa->len = 0;
+ awa->mod = len;
+ return awa;
+}
+
+map_t* map_init(){
+ return map_initl(4);
+}
+
+void map_expand(map_t** _M){
+ map_t* M = *_M;
+ map_t* remade = map_initl(M->mod * 4);
+ for(int i = 0; i != M->mod; i++){
+ //what happens if the map_set calls map_regraph??? idk
+ if(M->M[i].used)
+ map_set(&remade, M->M[i].key->c, M->M[i].value);
+ }
+
+ *_M = remade;
+}
+
+void map_set(map_t** _M, char* key, void* value){
+ map_t* M = *_M;
+ uint64_t h = hash(key, strlen(key));
+
+ if(M->len + 1 >= M->mod){
+ expand:
+ map_expand(&M);
+ }
+ uint64_t ind = h % M->mod;
+ uint64_t oind = ind;
+
+ //iterates until there is a free space
+ for(int count = 0; M->M[ind].used && M->M[ind].hash != h && strcmp(M->M[ind].key->c, key) != 0; count++){
+ ind++;
+ if(ind >= M->mod) ind = 0;
+ if(ind == oind || count > 10) goto expand;
+ }
+
+ M->M[ind].hash = h;
+ M->M[ind].key = str_init(key);
+ M->M[ind].value = value;
+ M->M[ind].used = 1;
+ M->len++;
+
+ *_M = M;
+}
+
+int map_geti(map_t* M, char* key){
+ uint64_t h = hash(key, strlen(key));
+ uint64_t ind = h % M->mod;
+
+ for(uint64_t initial = ind; ind != initial - 1;){
+ if(M->M[ind].key == NULL) return -1;
+ //printf("%s\n",M->M[ind].key->c);
+ if(M->M[ind].hash == h && strcmp(M->M[ind].key->c, key)==0) return ind;
+ ind++;
+ if(ind >= M->mod) ind = 0;
+ }
+ return -1;
+}
+
+void* map_get(map_t* M, char* key){
+ int r = map_geti(M, key);
+ //printf("%i\n",r);
+ return r == -1? NULL : M->M[r].value;
+}
+
+void map_remove(map_t* p, char* key, enum free_type free){
+ int ind = map_geti(p, key);
+ if(ind == -1) return;
+ p->M[ind].used = 0;
+ p->M[ind].hash = 0;
+ str_free(p->M[ind].key);
+ free_method(p->M[ind].value, free);
+}
+
+void map_lclear(map_t* M){
+ free(M->M);
+ free(M);
+}
+
+void map_clear(map_t* M, enum free_type free){
+ for(int i = 0; i != M->mod; i++){
+ if(M->M[i].used){
+ str_free(M->M[i].key);
+ free_method(M->M[i].value, free);
+ }
+ }
+ map_lclear(M);
+}
+
+int main(){
+ int i = 5;
+ int b = 24;
+ int c = 9;
+ map_t* m = map_init();
+
+ map_set(&m, "wowa", &b);
+ printf("%i\n",*(int*)map_get(m, "wowa"));
+ map_set(&m, "aw", &i);
+ map_set(&m, "awc", &i);
+ map_set(&m, "awa", &i);
+ map_set(&m, "aww", &i);
+ printf("%i\n",*(int*)map_get(m, "wowa"));
+
+ map_clear(m, NONE);
+
+ return 0;
} \ No newline at end of file
diff --git a/src/types/map.h b/src/types/map.h
index efa6d65..2603f47 100644
--- a/src/types/map.h
+++ b/src/types/map.h
@@ -1,30 +1,30 @@
-
-#ifndef _MAP_H
-#define _MAP_H
-
-#include <stdint.h>
-#include "str.h"
-#include "parray.h"
-
-typedef struct {
- void* value;
- str* key;
- uint64_t hash;
- int used;
-} melem_t;
-
-typedef struct {
- melem_t* M;
- int len;
- int mod;
-} map_t;
-
-map_t* map_init();
-void map_set(map_t**, char*, void*);
-void* map_get(map_t* , char*);
-int map_geti(map_t* , char*);
-void map_remove(map_t* p, char* key, enum free_type free);
-void map_clear(map_t*, enum free_type);
-void map_lclear(map_t*);
-
+
+#ifndef _MAP_H
+#define _MAP_H
+
+#include <stdint.h>
+#include "str.h"
+#include "parray.h"
+
+typedef struct {
+ void* value;
+ str* key;
+ uint64_t hash;
+ int used;
+} melem_t;
+
+typedef struct {
+ melem_t* M;
+ int len;
+ int mod;
+} map_t;
+
+map_t* map_init();
+void map_set(map_t**, char*, void*);
+void* map_get(map_t* , char*);
+int map_geti(map_t* , char*);
+void map_remove(map_t* p, char* key, enum free_type free);
+void map_clear(map_t*, enum free_type);
+void map_lclear(map_t*);
+
#endif //_MAP_H \ No newline at end of file
diff --git a/src/types/str.c b/src/types/str.c
index 929057e..364a02f 100644
--- a/src/types/str.c
+++ b/src/types/str.c
@@ -1,66 +1,66 @@
-#include "str.h"
-#include "../lua.h"
-#include "../util.h"
-
-#define alloc_buffer 64
-
-str* str_initl(char* init, size_t len){
- if(init == NULL){
- char cc = '\0';
- init = &cc;
- }
-
- str* s = malloc(sizeof * s);
- s->_bytes = len + 1 + alloc_buffer;
- s->c = malloc(s->_bytes);
- if(s->c == NULL) p_fatal("failed to allocate string\n");
- s->len = len ;
-
- memcpy(s->c, init, len + 1);
- return s;
-}
-
-str* str_init(char* init){
- return str_initl(init, strlen(init));
-}
-
-void str_free(str* s){
- free(s->c);
- return free(s);
-}
-
-void str_push(str* s, char* insert){
- s->len += strlen(insert);
- if(s->len + 1 >= s->_bytes)
- s->c = realloc(s->c, s->_bytes = s->len + 1 + alloc_buffer);
- strcat(s->c, insert);
-}
-
-void str_pushl(str* s, char* insert, size_t l){
- if(s->len + l >= s->_bytes)
- s->c = realloc(s->c, s->_bytes = s->len + l + alloc_buffer);
- //strcat(s->c, insert);
- for(int i = 0; i != l; i++){
- s->c[i + s->len] = insert[i];
- }
- s->len += l;
- s->c[s->len] = '\0';
-}
-
-void str_clear(str* s){
- memset(s->c, 0, s->len);
-
- s->len = 0;
-}
-
-void str_popf(str* s, int len){
- memmove(s->c, s->c + len, s->len -= len);
- s->c[s->len] = 0;
-}
-
-void str_popb(str* s, int len){
- s->len -= len;
- s->c[s->len] = 0;
-}
-
-
+#include "str.h"
+#include "../lua.h"
+#include "../util.h"
+
+#define alloc_buffer 64
+
+str* str_initl(char* init, size_t len){
+ if(init == NULL){
+ char cc = '\0';
+ init = &cc;
+ }
+
+ str* s = malloc(sizeof * s);
+ s->_bytes = len + 1 + alloc_buffer;
+ s->c = malloc(s->_bytes);
+ if(s->c == NULL) p_fatal("failed to allocate string\n");
+ s->len = len ;
+
+ memcpy(s->c, init, len + 1);
+ return s;
+}
+
+str* str_init(char* init){
+ return str_initl(init, strlen(init));
+}
+
+void str_free(str* s){
+ free(s->c);
+ return free(s);
+}
+
+void str_push(str* s, char* insert){
+ s->len += strlen(insert);
+ if(s->len + 1 >= s->_bytes)
+ s->c = realloc(s->c, s->_bytes = s->len + 1 + alloc_buffer);
+ strcat(s->c, insert);
+}
+
+void str_pushl(str* s, char* insert, size_t l){
+ if(s->len + l >= s->_bytes)
+ s->c = realloc(s->c, s->_bytes = s->len + l + alloc_buffer);
+ //strcat(s->c, insert);
+ for(int i = 0; i != l; i++){
+ s->c[i + s->len] = insert[i];
+ }
+ s->len += l;
+ s->c[s->len] = '\0';
+}
+
+void str_clear(str* s){
+ memset(s->c, 0, s->len);
+
+ s->len = 0;
+}
+
+void str_popf(str* s, int len){
+ memmove(s->c, s->c + len, s->len -= len);
+ s->c[s->len] = 0;
+}
+
+void str_popb(str* s, int len){
+ s->len -= len;
+ s->c[s->len] = 0;
+}
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-13 09:43:01 +0000