Annotation of parser3/src/types/pa_value.C, revision 1.15
1.1 paf 1: /** @file
2: Parser: Value class.
3:
1.10 paf 4: Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
1.1 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.2 paf 6: */
1.1 paf 7:
1.15 ! paf 8: static const char * const IDENT_VALUE_C="$Date: 2003/11/20 17:46:02 $";
1.1 paf 9:
10: #include "pa_value.h"
11: #include "pa_vstateless_class.h"
1.4 paf 12: #include "pa_vmethod_frame.h"
1.10 paf 13: #include "pa_vdate.h"
14: #include "pa_vobject.h"
15:
16: // defines for globals
17:
18: #define NAME_NAME "name"
19:
20: // globals
21:
22: const String name_name(NAME_NAME);
23:
24: const String value_name(VALUE_NAME);
1.12 paf 25: const String expires_name(EXPIRES_NAME);
1.10 paf 26: const String content_type_name(CONTENT_TYPE_NAME);
27:
28: // methods
29:
30: VObject* Value::set_derived(VObject* /*aderived*/) { return 0; }
31:
32: Junction* Value::get_junction() { return 0; }
33:
1.11 paf 34: Value* Value::base_object() { return bark("is '%s', it has no base object"); }
1.10 paf 35:
36: Value* Value::get_element(const String& /*aname*/, Value& /*aself*/, bool /*looking_up*/) {
1.11 paf 37: return bark("is '%s', it has no elements");
1.10 paf 38: }
39:
40:
41: VFile* Value::as_vfile(String::Language /*lang*/, const Request_charsets* /*charsets*/) {
1.11 paf 42: bark("is '%s', it does not have file value"); return 0;
1.10 paf 43: }
1.1 paf 44:
45: /// call this before invoking to ensure proper actual numbered params count
1.10 paf 46: void Method::check_actual_numbered_params(Value& self,
47: MethodParams* actual_numbered_params) const {
1.1 paf 48:
1.10 paf 49: int actual_count=actual_numbered_params?actual_numbered_params->count():0;
1.1 paf 50: if(actual_count<min_numbered_params_count) // not proper count? bark
51: throw Exception("parser.runtime",
1.10 paf 52: 0,
1.1 paf 53: "native method of %s (%s) accepts minimum %d parameter(s) (%d present)",
1.8 paf 54: self.get_class()->name_cstr(),
55: self.type(),
1.1 paf 56: min_numbered_params_count,
57: actual_count);
58:
59: }
1.4 paf 60:
1.10 paf 61: Junction::Junction(Value& aself,
62: const Method* amethod,
63: VMethodFrame* amethod_frame,
64: Value* arcontext,
65: WContext* awcontext,
66: ArrayOperation* acode): self(aself),
1.7 paf 67: method(amethod),
1.4 paf 68: method_frame(amethod_frame),
69: rcontext(arcontext),
70: wcontext(awcontext),
71: code(acode) {
1.5 paf 72: if(wcontext)
1.10 paf 73: wcontext->attach_junction(this);
1.4 paf 74: }
75:
1.5 paf 76: void Junction::reattach(WContext *new_wcontext) {
77: if(new_wcontext)
78: wcontext=new_wcontext;
79: else {
80: method_frame=0;
81: rcontext=0;
82: wcontext=0;
83: }
1.4 paf 84: }
85:
86: /*
87: void Junction::change_context(Junction *source) {
88: if(source) {
89: method_frame=source->method_frame;
90: rcontext=source->rcontext;
91: wcontext=source->wcontext;
92: } else {
93: method_frame=rcontext=0;
94: wcontext=0;
95: }
96: }
97: */
98:
1.10 paf 99: // attributed meaning
100:
101: static String::C date_attribute(const VDate& vdate) {
102: /// http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3
103: const char month_names[12][4]={
104: "Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
105: const char days[7][4]={
106: "Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
107:
108: time_t when=vdate.get_time();
109: struct tm *tms=gmtime(&when);
110: if(!tms)
111: throw Exception(0,
112: 0,
1.15 ! paf 113: "bad time in attribute value (seconds from epoch=%u)", when);
1.10 paf 114:
115: char *buf=new(PointerFreeGC) char[MAX_STRING];
116: return String::C(buf,
117: snprintf(buf, MAX_STRING, "%s, %.2d %s %.4d %.2d:%.2d:%.2d GMT",
118: days[tms->tm_wday],
119: tms->tm_mday,month_names[tms->tm_mon],tms->tm_year+1900,
120: tms->tm_hour,tms->tm_min,tms->tm_sec));
121: }
122: static void append_attribute_meaning(String& result,
123: Value& value, String::Language lang, bool forced) {
124: if(const String* string=value.get_string())
125: result.append(*string, lang, forced);
126: else
127: if(Value* vdate=value.as(VDATE_TYPE, false)) {
128: String::C attribute=date_attribute(static_cast<VDate&>(*vdate));
129:
130: result.append_help_length(attribute.str, attribute.length, String::L_CLEAN);
131: } else
132: throw Exception("parser.runtime",
133: &result,
134: "trying to append here neither string nor date (%s)",
135: value.type());
136: }
137: #ifndef DOXYGEN
138: struct Attributed_meaning_info {
139: String* header; // header line being constructed
140: String::Language lang; // language in which to append to that line
141: bool forced; // do they force that lang?
142: };
143: #endif
144: static void append_attribute_subattribute(HashStringValue::key_type akey,
145: HashStringValue::value_type avalue,
146: Attributed_meaning_info *info) {
147: if(akey==VALUE_NAME)
148: return;
149:
150: // ...; charset=windows1251
151: *info->header << "; ";
152: info->header->append(String(akey, String::L_TAINTED), info->lang, info->forced);
153: *info->header << "=";
154: append_attribute_meaning(*info->header, *avalue, info->lang, info->forced);
155: }
156: const String& attributed_meaning_to_string(Value& meaning,
157: String::Language lang, bool forced) {
158: String& result=*new String;
159: if(HashStringValue *hash=meaning.get_hash()) {
160: // $value(value) $subattribute(subattribute value)
161: if(Value* value=hash->get(value_name))
162: append_attribute_meaning(result, *value, lang, forced);
163:
1.14 paf 164: Attributed_meaning_info attributed_meaning_info={&result, lang, false};
1.10 paf 165: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
166: } else // result value
167: append_attribute_meaning(result, meaning, lang, forced);
168:
169: return result;
170: }
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