/*
* EXPOSED INTERFACE for the hashtable implementation
* util_htnew(size) -- to make a new hashtable
* util_htset(table, key, value, sizeof(value)) -- to set something in the table
* util_htget(table, key) -- to get something from the table
* util_htdel(table) -- to delete the table
*/
hash_table_t *util_htnew(size_t size) {
hash_table_t *hashtable = NULL;
stat_size_entry_t *find = NULL;
if (size < 1)
return NULL;
if (!stat_size_hashtables)
stat_size_hashtables = stat_size_new();
if (!(hashtable = (hash_table_t*)mem_a(sizeof(hash_table_t))))
return NULL;
if (!(hashtable->table = (hash_node_t**)mem_a(sizeof(hash_node_t*) * size))) {
mem_d(hashtable);
return NULL;
}
if ((find = stat_size_get(stat_size_hashtables, size)))
find->value++;
else {
stat_type_hashtables++;
stat_size_put(stat_size_hashtables, size, 1);
}
hashtable->size = size;
memset(hashtable->table, 0, sizeof(hash_node_t*) * size);
stat_used_hashtables++;
return hashtable;
}
/*
* The following functions below implement printing / dumping of statistical
* information.
*/
static void stat_dump_mem_contents(stat_mem_block_t *block, uint16_t cols) {
unsigned char *buffer = (unsigned char *)mem_a(cols);
unsigned char *memory = (unsigned char *)(block + 1);
size_t i;
for (i = 0; i < block->size; i++) {
if (!(i % 16)) {
if (i != 0)
con_out(" %s\n", buffer);
con_out(" 0x%08X: ", i);
}
con_out(" %02X", memory[i]);
buffer[i % cols] = ((memory[i] < 0x20) || (memory[i] > 0x7E))
? '.'
: memory[i];
buffer[(i % cols) + 1] = '\0';
}
while ((i % cols) != 0) {
con_out(" ");
i++;
}
con_out(" %s\n", buffer);
mem_d(buffer);
}
/*
* The reallocate function for resizing vectors.
*/
void _util_vec_grow(void **a, size_t i, size_t s) {
vector_t *d = vec_meta(*a);
size_t m = 0;
stat_size_entry_t *e = NULL;
void *p = NULL;
if (*a) {
m = 2 * d->allocated + i;
p = mem_r(d, s * m + sizeof(vector_t));
} else {
m = i + 1;
p = mem_a(s * m + sizeof(vector_t));
((vector_t*)p)->used = 0;
stat_used_vectors++;
}
if (!stat_size_vectors)
stat_size_vectors = stat_size_new();
if ((e = stat_size_get(stat_size_vectors, s))) {
e->value ++;
} else {
stat_size_put(stat_size_vectors, s, 1); /* start off with 1 */
stat_type_vectors++;
}
*a = (vector_t*)p + 1;
vec_meta(*a)->allocated = m;
}
/*
* The reallocate function for resizing vectors.
*/
void _util_vec_grow(void **a, size_t i, size_t s) {
vector_t *d = (vector_t*)((char *)*a - IDENT_VEC_TOP);
size_t m = 0;
stat_size_entry_t *e = NULL;
void *p = NULL;
if (*a) {
m = 2 * d->allocated + i;
p = mem_r(d, s * m + IDENT_VEC_TOP);
} else {
m = i + 1;
p = mem_a(s * m + IDENT_VEC_TOP);
((vector_t*)p)->used = 0;
stat_used_vectors++;
}
if (!stat_size_vectors)
stat_size_vectors = stat_size_new();
if ((e = stat_size_get(stat_size_vectors, s))) {
e->value ++;
} else {
stat_size_put(stat_size_vectors, s, 1); /* start off with 1 */
stat_type_vectors++;
}
d = (vector_t*)p;
d->allocated = m;
memcpy(d + 1, IDENT_VEC, IDENT_SIZE);
*a = (void *)((char *)d + IDENT_VEC_TOP);
}
int platform_vasprintf(char **dat, const char *fmt, va_list args) {
int ret;
int len;
char *tmp = NULL;
char buf[128];
va_list cpy;
va_copy(cpy, args);
len = vsnprintf(buf, sizeof(buf), fmt, cpy);
va_end (cpy);
if (len < (int)sizeof(buf)) {
*dat = util_strdup(buf);
return len;
}
tmp = (char*)mem_a(len + 1);
if ((ret = vsnprintf(tmp, len + 1, fmt, args)) != len) {
mem_d(tmp);
*dat = NULL;
return -1;
}
*dat = tmp;
return len;
}
code_t *code_init() {
static lex_ctx_t empty_ctx = {0, 0, 0};
static prog_section_function_t empty_function = {0,0,0,0,0,0,0,{0,0,0,0,0,0,0,0}};
static prog_section_statement_t empty_statement = {0,{0},{0},{0}};
static prog_section_def_t empty_def = {0, 0, 0};
code_t *code = (code_t*)mem_a(sizeof(code_t));
int i = 0;
memset(code, 0, sizeof(code_t));
code->entfields = 0;
code->string_cache = util_htnew(OPTS_OPTIMIZATION(OPTIM_OVERLAP_STRINGS) ? 0x100 : 1024);
/*
* The way progs.dat is suppose to work is odd, there needs to be
* some null (empty) statements, functions, and 28 globals
*/
for(; i < 28; i++)
vec_push(code->globals, 0);
vec_push(code->chars, '\0');
vec_push(code->functions, empty_function);
code_push_statement(code, &empty_statement, empty_ctx);
vec_push(code->defs, empty_def);
vec_push(code->fields, empty_def);
return code;
}
static void stat_size_put(stat_size_table_t table, size_t key, size_t value) {
size_t hash = (key % ST_SIZE);
while (table[hash] && table[hash]->key != key)
hash = (hash + 1) % ST_SIZE;
table[hash] = (stat_size_entry_t*)mem_a(sizeof(stat_size_entry_t));
table[hash]->key = key;
table[hash]->value = value;
}
static pak_file_t *pak_open_read(const char *file) {
pak_file_t *pak;
size_t itr;
if (!(pak = (pak_file_t*)mem_a(sizeof(pak_file_t))))
return NULL;
if (!(pak->handle = fs_file_open(file, "rb"))) {
mem_d(pak);
return NULL;
}
pak->directories = NULL;
pak->insert = false; /* read doesn't allow insert */
memset (&pak->header, 0, sizeof(pak_header_t));
fs_file_read (&pak->header, sizeof(pak_header_t), 1, pak->handle);
util_endianswap(&pak->header.magic, 1, sizeof(pak->header.magic));
util_endianswap(&pak->header.diroff, 1, sizeof(pak->header.diroff));
util_endianswap(&pak->header.dirlen, 1, sizeof(pak->header.dirlen));
/*
* Every PAK file has "PACK" stored as FOURCC data in the
* header. If this data cannot compare (as checked here), it's
* probably not a PAK file.
*/
if (pak->header.magic != PAK_FOURCC) {
fs_file_close(pak->handle);
mem_d (pak);
return NULL;
}
/*
* Time to read in the directory handles and prepare the directories
* vector. We're going to be reading some the file inwards soon.
*/
fs_file_seek(pak->handle, pak->header.diroff, FS_FILE_SEEK_SET);
/*
* Read in all directories from the PAK file. These are considered
* to be the "file entries".
*/
for (itr = 0; itr < pak->header.dirlen / 64; itr++) {
pak_directory_t dir;
fs_file_read (&dir, sizeof(pak_directory_t), 1, pak->handle);
/* Don't translate name - it's just an array of bytes. */
util_endianswap(&dir.pos, 1, sizeof(dir.pos));
util_endianswap(&dir.len, 1, sizeof(dir.len));
vec_push(pak->directories, dir);
}
return pak;
}
void correct_add(correct_trie_t* table, size_t ***size, const char *ident) {
size_t *data = NULL;
const char *add = ident;
if (!correct_update(&table, add)) {
data = (size_t*)mem_a(sizeof(size_t));
*data = 1;
vec_push((*size), data);
correct_trie_set(table, add, data);
}
}
static GMQCC_INLINE void correct_trie_set(correct_trie_t *t, const char *key, void * const value) {
const unsigned char *data = (const unsigned char*)key;
while (*data) {
if (!t->entries) {
t->entries = (correct_trie_t*)mem_a(sizeof(correct_trie_t)*(sizeof(correct_alpha)-1));
memset(t->entries, 0, sizeof(correct_trie_t)*(sizeof(correct_alpha)-1));
}
t = t->entries + correct_alpha_index[*data];
++data;
}
t->value = value;
}
/*
* Some string utility functions, because strdup uses malloc, and we want
* to track all memory (without replacing malloc).
*/
char *util_strdup(const char *s) {
size_t len = 0;
char *ptr = NULL;
if (!s)
return NULL;
if ((len = strlen(s)) && (ptr = mem_a(len+1))) {
memcpy(ptr, s, len);
ptr[len] = '\0';
}
return ptr;
}
/*
* When given a string like "a/b/c/d/e/file"
* this function will handle the creation of
* the directory structure, included nested
* directories.
*/
static void pak_tree_build(const char *entry) {
char *directory;
char *elements[28];
char *pathsplit;
char *token;
size_t itr;
size_t jtr;
pathsplit = (char *)mem_a(56);
directory = (char *)mem_a(56);
memset(pathsplit, 0, 56);
util_strncpy(directory, entry, 56);
for (itr = 0; (token = pak_tree_sep(&directory, "/")) != NULL; itr++) {
elements[itr] = token;
}
for (jtr = 0; jtr < itr - 1; jtr++) {
util_strcat(pathsplit, elements[jtr]);
util_strcat(pathsplit, "/");
if (fs_dir_make(pathsplit)) {
mem_d(pathsplit);
mem_d(directory);
/* TODO: undo on fail */
return;
}
}
mem_d(pathsplit);
mem_d(directory);
}
static hash_node_t *_util_htnewpair(const char *key, void *value) {
hash_node_t *node;
if (!(node = (hash_node_t*)mem_a(sizeof(hash_node_t))))
return NULL;
if (!(node->key = util_strdupe(key))) {
mem_d(node);
return NULL;
}
node->value = value;
node->next = NULL;
return node;
}
/*
* Extraction abilities. These work as you expect them to.
*/
static bool pak_extract_one(pak_file_t *pak, const char *file, const char *outdir) {
pak_directory_t *dir = NULL;
unsigned char *dat = NULL;
char *local = NULL;
FILE *out = NULL;
if (!pak_exists(pak, file, &dir)) {
return false;
}
if (!(dat = (unsigned char *)mem_a(dir->len)))
goto err;
/*
* Generate the directory structure / tree that will be required
* to store the extracted file.
*/
pak_tree_build(file);
/* TODO portable path seperators */
util_asprintf(&local, "%s/%s", outdir, file);
/*
* Now create the file, if this operation fails. Then abort
* It shouldn't fail though.
*/
if (!(out = fs_file_open(local, "wb")))
goto err;
/* free memory for directory string */
mem_d(local);
/* read */
if (fs_file_seek (pak->handle, dir->pos, SEEK_SET) != 0)
goto err;
fs_file_read (dat, 1, dir->len, pak->handle);
fs_file_write(dat, 1, dir->len, out);
fs_file_close(out);
mem_d(dat);
return true;
err:
if (dat) mem_d(dat);
if (out) fs_file_close(out);
return false;
}
static pak_file_t *pak_open_write(const char *file) {
pak_file_t *pak;
if (!(pak = (pak_file_t*)mem_a(sizeof(pak_file_t))))
return NULL;
/*
* Generate the required directory structure / tree for
* writing this PAK file too.
*/
pak_tree_build(file);
if (!(pak->handle = fs_file_open(file, "wb"))) {
/*
* The directory tree that was created, needs to be
* removed entierly if we failed to open a file.
*/
/* TODO backup directory clean */
mem_d(pak);
return NULL;
}
memset(&(pak->header), 0, sizeof(pak_header_t));
/*
* We're in "insert" mode, we need to do things like header
* "patching" and writing the directories at the end of the
* file.
*/
pak->insert = true;
pak->header.magic = PAK_FOURCC;
/* on BE systems we need to swap the byte order of the FOURCC */
util_endianswap(&pak->header.magic, 1, sizeof(uint32_t));
/*
* We need to write out the header since files will be wrote out to
* this even with directory entries, and that not wrote. The header
* will need to be patched in later with a file_seek, and overwrite,
* we could use offsets and other trickery. This is just easier.
*/
fs_file_write(&(pak->header), sizeof(pak_header_t), 1, pak->handle);
return pak;
}
/*
* Implements libc getline for systems that don't have it, which is
* assmed all. This works the same as getline().
*/
int util_getline(char **lineptr, size_t *n, FILE *stream) {
int chr;
int ret;
char *pos;
if (!lineptr || !n || !stream)
return -1;
if (!*lineptr) {
if (!(*lineptr = (char*)mem_a((*n=64))))
return -1;
}
chr = *n;
pos = *lineptr;
for (;;) {
int c = getc(stream);
if (chr < 2) {
*n += (*n > 16) ? *n : 64;
chr = *n + *lineptr - pos;
if (!(*lineptr = (char*)mem_r(*lineptr,*n)))
return -1;
pos = *n - chr + *lineptr;
}
if (ferror(stream))
return -1;
if (c == EOF) {
if (pos == *lineptr)
return -1;
else
break;
}
*pos++ = c;
chr--;
if (c == '\n')
break;
}
*pos = '\0';
return (ret = pos - *lineptr);
}
fold_t *fold_init(parser_t *parser) {
fold_t *fold = (fold_t*)mem_a(sizeof(fold_t));
fold->parser = parser;
fold->imm_float = NULL;
fold->imm_vector = NULL;
fold->imm_string = NULL;
fold->imm_string_untranslate = util_htnew(FOLD_STRING_UNTRANSLATE_HTSIZE);
fold->imm_string_dotranslate = util_htnew(FOLD_STRING_DOTRANSLATE_HTSIZE);
/*
* prime the tables with common constant values at constant
* locations.
*/
(void)fold_constgen_float (fold, 0.0f);
(void)fold_constgen_float (fold, 1.0f);
(void)fold_constgen_float (fold, -1.0f);
(void)fold_constgen_float (fold, 2.0f);
(void)fold_constgen_vector(fold, vec3_create(0.0f, 0.0f, 0.0f));
(void)fold_constgen_vector(fold, vec3_create(-1.0f, -1.0f, -1.0f));
return fold;
}
static int qc_strcat(qc_program_t *prog) {
char *buffer;
size_t len1, len2;
qcany_t *str1, *str2;
qcany_t out;
const char *cstr1;
const char *cstr2;
CheckArgs(2);
str1 = GetArg(0);
str2 = GetArg(1);
cstr1 = prog_getstring(prog, str1->string);
cstr2 = prog_getstring(prog, str2->string);
len1 = strlen(cstr1);
len2 = strlen(cstr2);
buffer = (char*)mem_a(len1 + len2 + 1);
memcpy(buffer, cstr1, len1);
memcpy(buffer+len1, cstr2, len2+1);
out.string = prog_tempstring(prog, buffer);
mem_d(buffer);
Return(out);
return 0;
}
qc_program* prog_load(const char *filename)
{
qc_program *prog;
prog_header header;
FILE *file;
file = util_fopen(filename, "rb");
if (!file)
return NULL;
if (fread(&header, sizeof(header), 1, file) != 1) {
loaderror("failed to read header from '%s'", filename);
fclose(file);
return NULL;
}
if (header.version != 6) {
loaderror("header says this is a version %i progs, we need version 6\n", header.version);
fclose(file);
return NULL;
}
prog = (qc_program*)mem_a(sizeof(qc_program));
if (!prog) {
fclose(file);
printf("failed to allocate program data\n");
return NULL;
}
memset(prog, 0, sizeof(*prog));
prog->entityfields = header.entfield;
prog->crc16 = header.crc16;
prog->filename = util_strdup(filename);
if (!prog->filename) {
loaderror("failed to store program name");
goto error;
}
#define read_data(hdrvar, progvar, reserved) \
if (fseek(file, header.hdrvar.offset, SEEK_SET) != 0) { \
loaderror("seek failed"); \
goto error; \
} \
if (fread(vec_add(prog->progvar, header.hdrvar.length + reserved), \
sizeof(*prog->progvar), \
header.hdrvar.length, file) \
!= header.hdrvar.length) \
{ \
loaderror("read failed"); \
goto error; \
}
#define read_data1(x) read_data(x, x, 0)
#define read_data2(x, y) read_data(x, x, y)
read_data (statements, code, 0);
read_data1(defs);
read_data1(fields);
read_data1(functions);
read_data1(strings);
read_data2(globals, 2); /* reserve more in case a RETURN using with the global at "the end" exists */
fclose(file);
/* profile counters */
memset(vec_add(prog->profile, vec_size(prog->code)), 0, sizeof(prog->profile[0]) * vec_size(prog->code));
/* Add tempstring area */
prog->tempstring_start = vec_size(prog->strings);
prog->tempstring_at = vec_size(prog->strings);
memset(vec_add(prog->strings, 16*1024), 0, 16*1024);
/* spawn the world entity */
vec_push(prog->entitypool, true);
memset(vec_add(prog->entitydata, prog->entityfields), 0, prog->entityfields * sizeof(prog->entitydata[0]));
prog->entities = 1;
return prog;
error:
if (prog->filename)
mem_d(prog->filename);
vec_free(prog->code);
vec_free(prog->defs);
vec_free(prog->fields);
vec_free(prog->functions);
vec_free(prog->strings);
vec_free(prog->globals);
vec_free(prog->entitydata);
vec_free(prog->entitypool);
mem_d(prog);
return NULL;
}
/*
* A tiny size_t key-value hashtbale for tracking vector and hashtable
* sizes. We can use it for other things too, if we need to. This is
* very TIGHT, and efficent in terms of space though.
*/
static stat_size_table_t stat_size_new(void) {
return (stat_size_table_t)memset(
mem_a(sizeof(stat_size_entry_t*) * ST_SIZE),
0, ST_SIZE * sizeof(stat_size_entry_t*)
);
}
static GMQCC_INLINE void correct_pool_new(void) {
correct_pool_addr = 0;
correct_pool_this = (unsigned char *)mem_a(CORRECT_POOL_SIZE);
vec_push(correct_pool_data, correct_pool_this);
}
static task_template_t *task_template_compile(const char *file, const char *dir, size_t *pad) {
/* a page should be enough */
char fullfile[4096];
size_t filepadd = 0;
fs_file_t *tempfile = NULL;
task_template_t *tmpl = NULL;
util_snprintf(fullfile, sizeof(fullfile), "%s/%s", dir, file);
tempfile = fs_file_open(fullfile, "r");
tmpl = (task_template_t*)mem_a(sizeof(task_template_t));
task_template_nullify(tmpl);
/*
* Create some padding for the printing to align the
* printing of the rules file to the console.
*/
if ((filepadd = strlen(fullfile)) > pad[1])
pad[1] = filepadd;
tmpl->rulesfile = util_strdup(fullfile);
/*
* Esnure the file even exists for the task, this is pretty useless
* to even do.
*/
if (!tempfile) {
con_err("template file: %s does not exist or invalid permissions\n",
file
);
goto failure;
}
if (!task_template_parse(file, tmpl, tempfile, pad)) {
con_err("template parse error: error during parsing\n");
goto failure;
}
/*
* Regardless procedure type, the following tags must exist:
* D
* T
* C
* I
*/
if (!tmpl->description) {
con_err("template compile error: %s missing `D:` tag\n", file);
goto failure;
}
if (!tmpl->proceduretype) {
con_err("template compile error: %s missing `T:` tag\n", file);
goto failure;
}
if (!tmpl->compileflags) {
con_err("template compile error: %s missing `C:` tag\n", file);
goto failure;
}
if (!tmpl->sourcefile) {
con_err("template compile error: %s missing `I:` tag\n", file);
goto failure;
}
/*
* Now lets compile the template, compilation is really just
* the process of validating the input.
*/
if (!strcmp(tmpl->proceduretype, "-compile")) {
if (tmpl->executeflags)
con_err("template compile warning: %s erroneous tag `E:` when only compiling\n", file);
if (tmpl->comparematch)
con_err("template compile warning: %s erroneous tag `M:` when only compiling\n", file);
goto success;
} else if (!strcmp(tmpl->proceduretype, "-execute")) {
if (!tmpl->executeflags) {
/* default to $null */
tmpl->executeflags = util_strdup("$null");
}
if (!tmpl->comparematch) {
con_err("template compile error: %s missing `M:` tag (use `$null` for exclude)\n", file);
goto failure;
}
} else if (!strcmp(tmpl->proceduretype, "-fail")) {
if (tmpl->executeflags)
con_err("template compile warning: %s erroneous tag `E:` when only failing\n", file);
if (tmpl->comparematch)
con_err("template compile warning: %s erroneous tag `M:` when only failing\n", file);
} else if (!strcmp(tmpl->proceduretype, "-diagnostic")) {
if (tmpl->executeflags)
con_err("template compile warning: %s erroneous tag `E:` when only diagnostic\n", file);
if (!tmpl->comparematch) {
con_err("template compile error: %s missing `M:` tag (use `$null` for exclude)\n", file);
goto failure;
}
} else if (!strcmp(tmpl->proceduretype, "-pp")) {
if (tmpl->executeflags)
con_err("template compile warning: %s erroneous tag `E:` when only preprocessing\n", file);
if (!tmpl->comparematch) {
con_err("template compile error: %s missing `M:` tag (use `$null` for exclude)\n", file);
goto failure;
}
} else {
con_err("template compile error: %s invalid procedure type: %s\n", file, tmpl->proceduretype);
goto failure;
}
success:
fs_file_close(tempfile);
return tmpl;
failure:
/*
* The file might not exist and we jump here when that doesn't happen
* so the check to see if it's not null here is required.
*/
if (tempfile)
fs_file_close(tempfile);
mem_d (tmpl);
return NULL;
}
/*
* A fast space efficent trie for a dictionary of identifiers. This is
* faster than a hashtable for one reason. A hashtable itself may have
* fast constant lookup time, but the hash itself must be very fast. We
* have one of the fastest hash functions for strings, but if you do a
* lost of hashing (which we do, almost 3 million hashes per identifier)
* a hashtable becomes slow.
*/
correct_trie_t* correct_trie_new() {
correct_trie_t *t = (correct_trie_t*)mem_a(sizeof(correct_trie_t));
t->value = NULL;
t->entries = NULL;
return t;
}
qc_program_t* prog_load(const char *filename, bool skipversion)
{
prog_header_t header;
qc_program_t *prog;
FILE *file = fopen(filename, "rb");
/* we need all those in order to support INSTR_STATE: */
bool has_self = false,
has_time = false,
has_think = false,
has_nextthink = false,
has_frame = false;
if (!file)
return nullptr;
if (fread(&header, sizeof(header), 1, file) != 1) {
loaderror("failed to read header from '%s'", filename);
fclose(file);
return nullptr;
}
util_swap_header(header);
if (!skipversion && header.version != 6) {
loaderror("header says this is a version %i progs, we need version 6\n", header.version);
fclose(file);
return nullptr;
}
prog = (qc_program_t*)mem_a(sizeof(qc_program_t));
if (!prog) {
fclose(file);
fprintf(stderr, "failed to allocate program data\n");
return nullptr;
}
memset(prog, 0, sizeof(*prog));
prog->entityfields = header.entfield;
prog->crc16 = header.crc16;
prog->filename = util_strdup(filename);
if (!prog->filename) {
loaderror("failed to store program name");
goto error;
}
#define read_data(hdrvar, progvar, reserved) \
if (fseek(file, header.hdrvar.offset, SEEK_SET) != 0) { \
loaderror("seek failed"); \
goto error; \
} \
prog->progvar.resize(header.hdrvar.length + reserved); \
if (fread( \
&prog->progvar[0], \
sizeof(prog->progvar[0]), \
header.hdrvar.length, \
file \
)!= header.hdrvar.length \
) { \
loaderror("read failed"); \
goto error; \
}
#define read_data1(x) read_data(x, x, 0)
#define read_data2(x, y) read_data(x, x, y)
read_data (statements, code, 0);
read_data1(defs);
read_data1(fields);
read_data1(functions);
read_data1(strings);
read_data2(globals, 2); /* reserve more in case a RETURN using with the global at "the end" exists */
util_swap_statements(prog->code);
util_swap_defs_fields(prog->defs);
util_swap_defs_fields(prog->fields);
util_swap_functions(prog->functions);
util_swap_globals(prog->globals);
fclose(file);
/* profile counters */
memset(vec_add(prog->profile, prog->code.size()), 0, sizeof(prog->profile[0]) * prog->code.size());
/* Add tempstring area */
prog->tempstring_start = prog->strings.size();
prog->tempstring_at = prog->strings.size();
prog->strings.resize(prog->strings.size() + 16*1024, '\0');
/* spawn the world entity */
vec_push(prog->entitypool, true);
memset(vec_add(prog->entitydata, prog->entityfields), 0, prog->entityfields * sizeof(prog->entitydata[0]));
prog->entities = 1;
/* cache some globals and fields from names */
for (auto &it : prog->defs) {
const char *name = prog_getstring(prog, it.name);
if (!strcmp(name, "self")) {
prog->cached_globals.self = it.offset;
has_self = true;
}
else if (!strcmp(name, "time")) {
prog->cached_globals.time = it.offset;
has_time = true;
}
}
for (auto &it : prog->fields) {
const char *name = prog_getstring(prog, it.name);
if (!strcmp(name, "think")) {
prog->cached_fields.think = it.offset;
has_think = true;
}
else if (!strcmp(name, "nextthink")) {
prog->cached_fields.nextthink = it.offset;
has_nextthink = true;
}
else if (!strcmp(name, "frame")) {
prog->cached_fields.frame = it.offset;
has_frame = true;
}
}
if (has_self && has_time && has_think && has_nextthink && has_frame)
prog->supports_state = true;
return prog;
error:
if (prog->filename)
mem_d(prog->filename);
vec_free(prog->entitydata);
vec_free(prog->entitypool);
mem_d(prog);
fclose(file);
return nullptr;
}
void *code_t::operator new(std::size_t bytes) {
return mem_a(bytes);
}
/*
* Insertion functions (the opposite of extraction). Yes for generating
* PAKs.
*/
static bool pak_insert_one(pak_file_t *pak, const char *file) {
pak_directory_t dir;
unsigned char *dat;
long len;
FILE *fp;
/*
* We don't allow insertion on files that already exist within the
* pak file. Weird shit can happen if we allow that ;). We also
* don't allow insertion if the pak isn't opened in write mode.
*/
if (!pak || !file || !pak->insert || pak_exists(pak, file, NULL))
return false;
if (!(fp = fs_file_open(file, "rb")))
return false;
/*
* Calculate the total file length, since it will be wrote to
* the directory entry, and the actual contents of the file
* to the PAK file itself.
*/
if (fs_file_seek(fp, 0, SEEK_END) != 0 || ((len = fs_file_tell(fp)) < 0))
goto err;
if (fs_file_seek(fp, 0, SEEK_SET) != 0)
goto err;
dir.len = len;
dir.pos = fs_file_tell(pak->handle);
/*
* We're limited to 56 bytes for a file name string, that INCLUDES
* the directory and '/' seperators.
*/
if (strlen(file) >= 56)
goto err;
util_strncpy(dir.name, file, strlen(file));
/*
* Allocate some memory for loading in the data that will be
* redirected into the PAK file.
*/
if (!(dat = (unsigned char *)mem_a(dir.len)))
goto err;
fs_file_read (dat, dir.len, 1, fp);
fs_file_close(fp);
fs_file_write(dat, dir.len, 1, pak->handle);
/*
* Now add the directory to the directories vector, so pak_close
* can actually write it.
*/
vec_push(pak->directories, dir);
return true;
err:
fs_file_close(fp);
return false;
}
