1 /* the "incl" state is used for picking up the name of an include file */
6 %option never-interactive
13 #include "conffile_internal.h"
14 #include "conffile.tab.h"
19 #define YY_INPUT(buf,result,max_size) \
21 (result)= fread((buf),1,(max_size),yyin); \
23 fatal_perror("Error reading configuration file (%s)", \
27 #define MAX_INCLUDE_DEPTH 10
28 struct include_stack_item {
33 struct include_stack_item include_stack[MAX_INCLUDE_DEPTH];
34 int include_stack_ptr=0;
36 uint32_t config_lineno=0;
37 cstring_t config_file="xxx";
39 static struct p_node *leafnode(uint32_t type)
43 r=safe_malloc(sizeof(*r),"leafnode");
45 r->loc.file=config_file;
46 r->loc.line=config_lineno;
51 static struct p_node *keynode(atom_t key)
55 r->data.key=intern(key);
59 static struct p_node *stringnode(string_t string)
64 string[strlen(string)-1]=0;
65 r->data.string=safe_strdup(string,"stringnode");
69 static struct p_node *numnode(string_t number)
73 r->data.number=atoi(number);
81 <incl>[ \t]* /* eat the whitespace */
82 <incl>[^ \t\n]+ { /* got the include filename */
83 if (include_stack_ptr >= MAX_INCLUDE_DEPTH) {
84 fatal("Configuration file includes nested too deeply");
86 include_stack[include_stack_ptr].bst=YY_CURRENT_BUFFER;
87 include_stack[include_stack_ptr].lineno=config_lineno;
88 include_stack[include_stack_ptr].file=config_file;
90 yyin=fopen(yytext,"r");
92 fatal("Can't open included file %s",yytext);
95 config_file=safe_strdup(yytext,"conffile.fl/include");
96 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
99 <incl>\n { /* include with no filename */
100 Message(M_FATAL,"config file %s line %d: %s\n",config_file,
101 config_lineno,"``include'' requires a filename");
108 if (--include_stack_ptr < 0) {
113 yy_delete_buffer(YY_CURRENT_BUFFER);
114 yy_switch_to_buffer(include_stack[include_stack_ptr].bst);
115 config_lineno=include_stack[include_stack_ptr].lineno;
116 config_file=include_stack[include_stack_ptr].file;
119 \"[^\"]*\" yylval=stringnode(yytext); return TOK_STRING;
121 [[:alpha:]_][[:alnum:]\-_]* yylval=keynode(yytext); return TOK_KEY;
123 [[:digit:]]+ yylval=numnode(yytext); return TOK_NUMBER;
126 \#.*\n config_lineno++;
132 /* Return all unclaimed single characters to the parser */