diff options
Diffstat (limited to 'machine/configstring.c')
-rw-r--r-- | machine/configstring.c | 160 |
1 files changed, 1 insertions, 159 deletions
diff --git a/machine/configstring.c b/machine/configstring.c index 3d0eda3..d2f2a84 100644 --- a/machine/configstring.c +++ b/machine/configstring.c @@ -1,166 +1,8 @@ +#include "configstring.h" #include "encoding.h" #include "mtrap.h" #include <stdio.h> -static const char* skip_whitespace(const char* str) -{ - while (*str && *str <= ' ') - str++; - return str; -} - -static const char* skip_string(const char* str) -{ - while (*str && *str++ != '"') - ; - return str; -} - -static int is_hex(char ch) -{ - return (ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F'); -} - -static int parse_hex(char ch) -{ - return (ch >= '0' && ch <= '9') ? ch - '0' : - (ch >= 'a' && ch <= 'f') ? ch - 'a' + 10 : - ch - 'A' + 10; -} - -static const char* skip_key(const char* str) -{ - while (*str >= 35 && *str <= 122 && *str != ';') - str++; - return str; -} - -typedef struct { - const char* start; - const char* end; -} query_result; - -static query_result query_config_string(const char* str, const char* k) -{ - size_t ksize = 0; - while (k[ksize] && k[ksize] != '{') - ksize++; - int last = !k[ksize]; - - query_result res = {0, 0}; - while (1) { - const char* key_start = str = skip_whitespace(str); - const char* key_end = str = skip_key(str); - int match = (key_end - key_start) == ksize; - if (match) - for (size_t i = 0; i < ksize; i++) - if (key_start[i] != k[i]) - match = 0; - const char* value_start = str = skip_whitespace(str); - while (*str != ';') { - if (!*str) { - return res; - } else if (*str == '"') { - str = skip_string(str+1); - } else if (*str == '{') { - const char* search_key = match && !last ? k + ksize + 1 : ""; - query_result inner_res = query_config_string(str + 1, search_key); - if (inner_res.start) - return inner_res; - str = inner_res.end + 1; - } else { - str = skip_key(str); - } - str = skip_whitespace(str); - } - res.end = str; - if (match && last) { - res.start = value_start; - return res; - } - str = skip_whitespace(str+1); - if (*str == '}') { - res.end = str; - return res; - } - } -} - -static void parse_string(query_result r, char* buf) -{ - if (r.start < r.end) { - if (*r.start == '"') { - for (const char* p = r.start + 1; p < r.end && *p != '"'; p++) { - char ch = p[0]; - if (ch == '\\' && p[1] == 'x' && is_hex(p[2])) { - ch = parse_hex(p[2]); - if (is_hex(p[3])) { - ch = (ch << 4) + parse_hex(p[3]); - p++; - } - p += 2; - } - *buf++ = ch; - } - } else { - for (const char* p = r.start; p < r.end && *p > ' '; p++) - *buf++ = *p; - } - } - *buf = 0; -} - -#define get_string(name, search_res) \ - char name[(search_res).end - (search_res).start + 1]; \ - parse_string(search_res, name) - -static unsigned long __get_uint_hex(const char* s) -{ - unsigned long res = 0; - while (*s) { - if (is_hex(*s)) - res = (res << 4) + parse_hex(*s); - else if (*s != '_') - break; - s++; - } - return res; -} - -static unsigned long __get_uint_dec(const char* s) -{ - unsigned long res = 0; - while (*s) { - if (*s >= '0' && *s <= '9') - res = res * 10 + (*s - '0'); - else - break; - s++; - } - return res; -} - -static unsigned long __get_uint(const char* s) -{ - if (s[0] == '0' && s[1] == 'x') - return __get_uint_hex(s+2); - return __get_uint_dec(s); -} - -static unsigned long get_uint(query_result res) -{ - get_string(s, res); - return __get_uint(s); -} - -static long get_sint(query_result res) -{ - get_string(s, res); - if (s[0] == '-') - return -__get_uint(s+1); - return __get_uint(s); -} - static void query_mem(const char* config_string) { query_result res = query_config_string(config_string, "ram{0{addr"); |