diff options
Diffstat (limited to 'cfg_file.l')
| -rw-r--r-- | cfg_file.l | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/cfg_file.l b/cfg_file.l new file mode 100644 index 000000000..453cb6992 --- /dev/null +++ b/cfg_file.l @@ -0,0 +1,174 @@ +%x incl + +%{ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include <syslog.h> +#include "cfg_file.h" +#include "cfg_yacc.h" + +#define MAX_INCLUDE_DEPTH 10 +YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; +int include_stack_ptr = 0; + +static size_t +parse_limit (const char *limit) +{ + size_t result = 0; + char *err_str; + + if (!limit || *limit == '\0') return 0; + + result = strtoul (limit, &err_str, 10); + + if (*err_str != '\0') { + /* Megabytes */ + if (*err_str == 'm' || *err_str == 'M') { + result *= 1048576L; + } + /* Kilobytes */ + else if (*err_str == 'k' || *err_str == 'K') { + result *= 1024; + } + /* Gigabytes */ + else if (*err_str == 'g' || *err_str == 'G') { + result *= 1073741824L; + } + } + + return result; +} + +static unsigned int +parse_seconds (const char *t) +{ + unsigned int result = 0; + char *err_str; + + if (!t || *t == '\0') return 0; + + result = strtoul (t, &err_str, 10); + + if (*err_str != '\0') { + /* Seconds */ + if (*err_str == 's' || *err_str == 'S') { + result *= 1000; + } + } + + return result; +} + +static char +parse_flag (const char *str) +{ + if (!str || !*str) return -1; + + if ((*str == 'Y' || *str == 'y') && *(str + 1) == '\0') { + return 1; + } + + if ((*str == 'Y' || *str == 'y') && + (*(str + 1) == 'E' || *(str + 1) == 'e') && + (*(str + 2) == 'S' || *(str + 2) == 's') && + *(str + 3) == '\0') { + return 1; + } + + if ((*str == 'N' || *str == 'n') && *(str + 1) == '\0') { + return 0; + } + + if ((*str == 'N' || *str == 'n') && + (*(str + 1) == 'O' || *(str + 1) == 'o') && + *(str + 2) == '\0') { + return 0; + } + + return -1; +} + +%} + +%option noyywrap +%option yylineno + +%% +^[ \t]*#.* /* ignore comments */; +.include BEGIN(incl); +tempdir return TEMPDIR; +pidfile return PIDFILE; +workers return WORKERS; +error_time return ERROR_TIME; +dead_time return DEAD_TIME; +maxerrors return MAXERRORS; +reconnect_timeout return RECONNECT_TIMEOUT; +connect_timeout return CONNECT_TIMEOUT; +protocol return PROTOCOL; +memcached return MEMCACHED; +bind_socket return BINDSOCK; +servers return SERVERS; + +\{ return OBRACE; +\} return EBRACE; +; return SEMICOLON; +, return COMMA; += return EQSIGN; +yes|YES|no|NO|[yY]|[nN] yylval.flag=parse_flag(yytext); return FLAG; +\n /* ignore EOL */; +[ \t]+ /* ignore whitespace */; +\"[^"]+\" yylval.string=strdup(yytext + 1); yylval.string[strlen(yylval.string) - 1] = '\0'; return QUOTEDSTRING; +\" return QUOTE; +[0-9]+ yylval.number=strtol(yytext, NULL, 10); return NUMBER; +[0-9]+[kKmMgG]? yylval.limit=parse_limit(yytext); return SIZELIMIT; +[0-9]+[sS]|[0-9]+[mM][sS] yylval.seconds=parse_seconds(yytext); return SECONDS; +[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3} yylval.string=strdup(yytext); return IPADDR; +[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\/[0-9]{1,2} yylval.string=strdup(yytext); return IPNETWORK; +[a-zA-Z<][a-zA-Z@+>_-]* yylval.string=strdup(yytext); return STRING; +\/[^/\n]+\/ yylval.string=strdup(yytext); return REGEXP; +[a-zA-Z0-9].[a-zA-Z0-9\/.-]+ yylval.string=strdup(yytext); return DOMAIN; +[a-zA-Z0-9.-]+:[0-9]{1,5} yylval.string=strdup(yytext); return HOSTPORT; +[a-zA-Z0-9\/.-]+ yylval.string=strdup(yytext); return FILENAME; +<incl>[ \t]* /* eat the whitespace */ +<incl>[^ \t\n]+ { /* got the include file name */ + if ( include_stack_ptr >= MAX_INCLUDE_DEPTH ) { + yyerror ("yylex: includes nested too deeply" ); + return -1; + } + + include_stack[include_stack_ptr++] = + YY_CURRENT_BUFFER; + + yyin = fopen( yytext, "r" ); + + if ( ! yyin ) { + yyerror("yylex: cannot open include file"); + return -1; + } + + yy_switch_to_buffer( + yy_create_buffer( yyin, YY_BUF_SIZE ) ); + + BEGIN(INITIAL); + } + +<<EOF>> { + if ( --include_stack_ptr < 0 ) + { + yyterminate(); + } + + else + { + yy_delete_buffer( YY_CURRENT_BUFFER ); + yy_switch_to_buffer( + include_stack[include_stack_ptr] ); + } + } + +%% +/* + * vi:ts=4 + */ |