Annotation of parser3/src/classes/hashfile.C, revision 1.34
1.1 parser 1: /** @file
2: Parser: @b hashfile parser class.
3:
1.33 paf 4: Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)
1.22 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.24 paf 6: */
7:
1.1 parser 8:
1.34 ! paf 9: static const char * const IDENT="$Id: hashfile.C,v 1.33.12.4 2005/07/28 10:02:26 paf Exp $";
1.1 parser 10:
1.4 parser 11: #include "classes.h"
1.1 parser 12:
13: #include "pa_request.h"
1.24 paf 14: #include "pa_vmethod_frame.h"
1.1 parser 15: #include "pa_vhashfile.h"
16: #include "pa_vhash.h"
17:
18: // class
19:
20: class MHashfile : public Methoded {
21: public: // VStateless_class
1.34 ! paf 22: Value *create_new_value(Pool& apool, HashStringValue&) { return new VHashfile(apool); }
1.1 parser 23:
24: public:
1.24 paf 25: MHashfile();
1.1 parser 26: public: // Methoded
27: bool used_directly() { return true; }
28: };
29:
1.24 paf 30: // global variable
31:
32: DECLARE_CLASS_VAR(hashfile, new MHashfile, 0);
33:
1.1 parser 34: // methods
35:
1.24 paf 36: static void _open(Request& r, MethodParams& params) {
37: VHashfile& self=GET_SELF(r, VHashfile);
1.1 parser 38:
1.24 paf 39: self.open(r.absolute(params.as_string(0, "filename must be string")));
1.9 paf 40: }
1.1 parser 41:
1.31 paf 42: static void _hash(Request& r, MethodParams&) {
1.24 paf 43: VHashfile& self=GET_SELF(r, VHashfile);
1.5 parser 44:
45: // write out result
1.26 paf 46: VHash& result=*new VHash(*self.get_hash());
1.5 parser 47: r.write_no_lang(result);
48: }
1.26 paf 49:
1.24 paf 50: static void _delete(Request& r, MethodParams& params) {
51: VHashfile& self=GET_SELF(r, VHashfile);
1.8 parser 52:
1.30 paf 53: if(!params.count()) {
54: // ^hashfile.delete[] asked to delete hashfile itself
55: self.delete_files();
56: return;
57: }
1.25 paf 58: // key
59: const String &key=params.as_string(0, "key must be string");
60: // remove
61: self.remove(key);
1.8 parser 62: }
63:
1.24 paf 64: static void _clear(Request& r, MethodParams&) {
65: VHashfile& self=GET_SELF(r, VHashfile);
66: self.clear();
1.12 paf 67: }
68:
1.27 paf 69: #ifndef DOXYGEN
1.28 paf 70: struct Foreach_info {
1.27 paf 71: Request* r;
72: const String* key_var_name;
73: const String* value_var_name;
74: Value* body_code;
75: Value* delim_maybe_code;
76:
77: Value* var_context;
78: VString* vkey;
79: VString* vvalue;
80: bool need_delim;
81: };
82: #endif
83: static void one_foreach_cycle(const String::Body key, const String& value, void* ainfo) {
1.28 paf 84: Foreach_info& info=*static_cast<Foreach_info*>(ainfo);
1.27 paf 85: info.vkey->set_string(*new String(key, String::L_TAINTED));
86: info.vvalue->set_string(value);
1.34 ! paf 87: info.var_context->put_element(*info.var_context, *info.key_var_name, info.vkey, false);
! 88: info.var_context->put_element(*info.var_context, *info.value_var_name, info.vvalue, false);
1.27 paf 89:
90: StringOrValue sv_processed=info.r->process(*info.body_code);
91: const String* s_processed=sv_processed.get_string();
92: if(info.delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
93: if(info.need_delim) // need delim & iteration produced string?
94: info.r->write_pass_lang(info.r->process(*info.delim_maybe_code));
95: info.need_delim=true;
96: }
97: info.r->write_pass_lang(sv_processed);
98: }
1.24 paf 99: static void _foreach(Request& r, MethodParams& params) {
100: VHashfile& self=GET_SELF(r, VHashfile);
101:
1.28 paf 102: Foreach_info info;
1.27 paf 103:
104: info.r=&r;
105: info.key_var_name=¶ms.as_string(0, "key-var name must be string");
106: info.value_var_name=¶ms.as_string(1, "value-var name must be string");
107: info.body_code=¶ms.as_junction(2, "body must be code");
108: info.delim_maybe_code=params.count()>3?params.get(3):0;
109:
110: info.var_context=info.body_code->get_junction()->wcontext;
111: info.vkey=new VString;
112: info.vvalue=new VString;
113:
114: info.need_delim=false;
115:
116: self.for_each(one_foreach_cycle, &info);
1.14 paf 117: }
118:
1.1 parser 119: // constructor
120:
1.24 paf 121: MHashfile::MHashfile(): Methoded("hashfile") {
1.9 paf 122: // ^hashfile::open[db_home;filename]
1.24 paf 123: add_native_method("open", Method::CT_DYNAMIC, _open, 1, 1);
1.5 parser 124: // ^hash[]
1.26 paf 125: add_native_method("hash", Method::CT_DYNAMIC, _hash, 0, 0);
1.8 parser 126: // ^hashfile.delete[key]
1.30 paf 127: add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 1);
1.12 paf 128: // ^hashfile.clear[]
129: add_native_method("clear", Method::CT_DYNAMIC, _clear, 0, 0);
1.14 paf 130: // ^hashfile.foreach[key;value]{code}[delim]
1.27 paf 131: add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 2+1, 2+1+1);
1.1 parser 132: }
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