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CppCXYCppCXY
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Fix bugs
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15 files changed

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-365
lines changed

15 files changed

+778
-365
lines changed

‎3rd/LuaJIT-utf8/utf8.c‎

Lines changed: 290 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,290 @@
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/*
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* patch for luajit by CppCXY
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*/
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#include <lua.h>
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#include <lauxlib.h>
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#include <string.h>
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// Returns the number of characters in the UTF-8 string `s`
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// that start between byte position `i` and `j` (both included).
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// The default for `i` and `j` is to consider all characters in the string.
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// For negative indices, it starts counting from the end of the string.
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// If `lax` is true, the function returns the number of characters in the string,
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// even if some of them are invalid.
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// Invalid characters are always counted as one character.
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// signature: utf8.len(s [, i [, j [, lax]]])
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// signature (s, [i], [j], [lax])
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int luajit_utf8_len(lua_State *L)
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{
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size_t len;
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const char *s = luaL_checklstring(L, 1, &len);
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lua_Integer i = luaL_optinteger(L, 2, 1);
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lua_Integer j = luaL_optinteger(L, 3, len);
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int lax = lua_toboolean(L, 4);
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// Adjust negative indices
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if (i < 0)
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i += len + 1;
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if (j < 0)
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j += len + 1;
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// Clamp indices to the string boundaries
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if (i < 1)
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i = 1;
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if (j > (lua_Integer)len)
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j = len;
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if (i > j)
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{
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lua_pushinteger(L, 0);
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return 1;
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}
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size_t start = i - 1;
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size_t end = j - 1;
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size_t count = 0;
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// Traverse the string to count characters
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for (size_t p = start; p <= end;)
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{
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if ((s[p] & 0xC0) != 0x80)
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{
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count++;
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}
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if (!lax && (s[p] & 0xC0) == 0x80)
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{
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// Invalid UTF-8 sequence
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p++;
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continue;
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}
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p++;
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}
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lua_pushinteger(L, count);
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return 1;
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}
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// signature (s, n, [i])
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int luajit_utf8_offset(lua_State *L)
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{
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// Get the string and the integer n from the Lua stack
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size_t len;
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const char *s = luaL_checklstring(L, 1, &len);
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lua_Integer n = luaL_checkinteger(L, 2);
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lua_Integer i = luaL_optinteger(L, 3, 1);
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// Adjust the starting index to be 0-based
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if (i < 1)
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i = 1;
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size_t p = i - 1;
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// Traverse the string to find the byte offset of the nth UTF-8 character
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lua_Integer count = 0;
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while (p < len)
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{
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// Check if the current byte is the start of a UTF-8 character
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if ((s[p] & 0xC0) != 0x80)
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{
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count++;
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if (count == n)
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{
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lua_pushinteger(L, p + 1); // Lua uses 1-based indexing
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return 1;
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}
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}
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p++;
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}
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// If we reach here, it means the nth character was not found
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lua_pushnil(L);
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}
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// Receives zero or more integers,
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// converts each one to its corresponding UTF-8 byte sequence and returns a string with the concatenation of
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// all these sequences.
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int luajit_utf8_char(lua_State *L)
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{
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int n = lua_gettop(L); // Number of arguments
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luaL_Buffer b;
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luaL_buffinit(L, &b);
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for (int i = 1; i <= n; i++)
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{
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lua_Integer code = luaL_checkinteger(L, i);
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if (code < 0x80)
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{
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// 1-byte sequence
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luaL_addchar(&b, (char)code);
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}
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else if (code < 0x800)
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{
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// 2-byte sequence
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luaL_addchar(&b, (char)(0xC0 | (code >> 6)));
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luaL_addchar(&b, (char)(0x80 | (code & 0x3F)));
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}
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else if (code < 0x10000)
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{
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// 3-byte sequence
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luaL_addchar(&b, (char)(0xE0 | (code >> 12)));
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luaL_addchar(&b, (char)(0x80 | ((code >> 6) & 0x3F)));
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luaL_addchar(&b, (char)(0x80 | (code & 0x3F)));
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}
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else if (code < 0x110000)
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{
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// 4-byte sequence
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luaL_addchar(&b, (char)(0xF0 | (code >> 18)));
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luaL_addchar(&b, (char)(0x80 | ((code >> 12) & 0x3F)));
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luaL_addchar(&b, (char)(0x80 | ((code >> 6) & 0x3F)));
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luaL_addchar(&b, (char)(0x80 | (code & 0x3F)));
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}
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else
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{
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return luaL_error(L, "invalid UTF-8 code point");
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}
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}
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luaL_pushresult(&b);
147+
return 1;
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}
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// Helper function to decode a single UTF-8 character
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static int luajit_utf8_decode(const char *s, int *len)
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{
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unsigned char c = s[0];
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if (c < 0x80)
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{
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*len = 1;
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return c;
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}
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else if (c < 0xE0)
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{
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*len = 2;
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return ((c & 0x1F) << 6) | (s[1] & 0x3F);
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}
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else if (c < 0xF0)
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{
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*len = 3;
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return ((c & 0x0F) << 12) | ((s[1] & 0x3F) << 6) | (s[2] & 0x3F);
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}
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else
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{
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*len = 4;
172+
return ((c & 0x07) << 18) | ((s[1] & 0x3F) << 12) | ((s[2] & 0x3F) << 6) | (s[3] & 0x3F);
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}
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}
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// Returns the codepoints (as integers) from all characters
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// in `s` that start between byte position `i` and `j` (both included).
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// signature (s [i], [j], [lax]) -> multiple integer values
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int luajit_utf8_codepoint(lua_State *L)
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{
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size_t len;
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const char *s = luaL_checklstring(L, 1, &len);
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lua_Integer i = luaL_optinteger(L, 2, 1);
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lua_Integer j = luaL_optinteger(L, 3, len);
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int lax = lua_toboolean(L, 4);
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// Adjust negative indices
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if (i < 0)
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i += len + 1;
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if (j < 0)
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j += len + 1;
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// Clamp indices to the string boundaries
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if (i < 1)
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i = 1;
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if (j > (lua_Integer)len)
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j = len;
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if (i > j)
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{
200+
lua_pushnil(L);
201+
return 1;
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}
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size_t pos = i - 1;
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int char_len;
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int codepoint = luajit_utf8_decode(s + pos, &char_len);
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if (!lax && (char_len == 1 && (s[pos] & 0x80) != 0))
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{
210+
lua_pushnil(L);
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return 1;
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}
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lua_pushinteger(L, codepoint); // Push the first code point
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if (i == j)
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{
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return 1; // Return the single code point
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}
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int count = 1;
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pos += char_len;
223+
while (pos < (size_t)j)
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{
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codepoint = luajit_utf8_decode(s + pos, &char_len);
226+
if (!lax && (char_len == 1 && (s[pos] & 0x80) != 0))
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{
228+
lua_pushnil(L);
229+
return 1;
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}
231+
lua_pushinteger(L, codepoint); // Push the code point
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count++;
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pos += char_len;
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}
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return count; // Return the number of code points
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}
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// Iterator function
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static int utf8_codes_iter(lua_State *L, int lax)
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{
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size_t len;
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const char *s = luaL_checklstring(L, 1, &len);
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int pos = luaL_checkinteger(L, 2);
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if (pos >= (int)len)
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{
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return 0; // End of iteration
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}
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int char_len;
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int codepoint = luajit_utf8_decode(s + pos, &char_len);
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254+
if (!lax && (char_len == 1 && (s[pos] & 0x80) != 0))
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{
256+
return luaL_error(L, "invalid UTF-8 byte sequence");
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}
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259+
lua_pushinteger(L, pos + 1); // Next position
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lua_pushinteger(L, codepoint); // Code point
261+
return 2;
262+
}
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264+
static int iter_codes_strict(lua_State *L)
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{
266+
return utf8_codes_iter(L, 0);
267+
}
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269+
static int iter_codes_lax(lua_State *L)
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{
271+
return utf8_codes_iter(L, 1);
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}
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274+
// Returns values so that the construction
275+
// ```lua
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// for p, c in utf8.codes(s) do
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// body
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// end
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// ```
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// will iterate over all UTF-8 characters in string s, with p being the position (in bytes) and c the code point of each character. It raises an error if it meets any invalid byte sequence.
281+
// signature (s [, lax]) -> fun(s: string, p: integer):integer, integer
282+
int luajit_utf8_codes(lua_State *L)
283+
{
284+
int lax = lua_toboolean(L, 2);
285+
const char *s = luaL_checkstring(L, 1);
286+
lua_pushcfunction(L, lax ? iter_codes_lax : iter_codes_strict);
287+
lua_pushvalue(L, 1);
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lua_pushinteger(L, 0);
289+
return 3;
290+
}

‎3rd/lua-seri/luajit-patch.c‎

Lines changed: 10 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -1,21 +1,22 @@
11
#include "luajit-patch.h"
22

3-
int common_lua_rawgeti(lua_State* L, int idx, int n)
3+
int common_lua_rawgeti(lua_State *L, int idx, int n)
44
{
55
#if LUA_VERSION_NUM >= 503
6-
lua_rawgeti(L, idx, n);
6+
lua_rawgeti(L, idx, n);
77
#else
8-
lua_rawgeti(L, idx, n);
9-
return lua_type(L, -1);
8+
lua_rawgeti(L, idx, n);
9+
return lua_type(L, -1);
1010
#endif
1111
}
1212

13-
int common_lua_isinteger(lua_State* L, int idx)
13+
int common_lua_isinteger(lua_State *L, int idx)
1414
{
1515
#if LUA_VERSION_NUM >= 503
16-
return lua_isinteger(L, idx);
16+
return lua_isinteger(L, idx);
1717
#else
18-
if (lua_type(L, idx) == LUA_TNUMBER) {
18+
if (lua_type(L, idx) == LUA_TNUMBER)
19+
{
1920
lua_Number n = lua_tonumber(L, idx);
2021
return n == (lua_Integer)n;
2122
}
@@ -30,8 +31,8 @@ int common_lua_rawgetp(lua_State *L, int idx, const void *p)
3031
#else
3132
lua_Integer key = (lua_Integer)p;
3233
lua_pushinteger(L, key);
33-
lua_rawget(L, idx);
34-
return lua_type(L, -1);
34+
lua_rawget(L, idx);
35+
return lua_type(L, -1);
3536
#endif
3637
}
3738

‎crates/basic/Cargo.toml‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -16,4 +16,6 @@ cc = "1.0"
1616
glob = "0.3.0"
1717

1818
[features]
19+
default = ["luajit"]
1920
no_format = []
21+
luajit = []

‎crates/basic/build.rs‎

Lines changed: 21 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -5,6 +5,7 @@ fn main() {
55
build_lpeglabel();
66
cfg!(windows).then(|| build_setfilemode());
77
cfg!(not(feature = "no_format")).then(|| build_emmyluacodestyle());
8+
build_luajit_utf8();
89
}
910

1011
fn build_lua_seri() {
@@ -103,3 +104,23 @@ fn build_emmyluacodestyle() {
103104

104105
builder.compile("EmmyLuaCodeStyle");
105106
}
107+
108+
fn build_luajit_utf8() {
109+
cc::Build::new()
110+
.include("3rd/luajit-utf8")
111+
.include("3rd/LuaJIT/src")
112+
.files(
113+
std::fs::read_dir("3rd/luajit-utf8")
114+
.unwrap()
115+
.filter_map(|entry| {
116+
let entry = entry.unwrap();
117+
let path = entry.path();
118+
if path.extension()?.to_str()? == "c" {
119+
Some(path)
120+
} else {
121+
None
122+
}
123+
}),
124+
)
125+
.compile("luajit-utf8");
126+
}

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