Annotation of parser3/src/classes/table.C, revision 1.27
1.20 paf 1: /** @file
2: Parser: table parser class.
3:
1.1 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.20 paf 5:
1.1 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
7:
1.27 ! paf 8: $Id: table.C,v 1.26 2001/03/25 08:52:28 paf Exp $
1.1 paf 9: */
10:
1.24 paf 11: #include "pa_config_includes.h"
1.16 paf 12: #include "pa_common.h"
1.1 paf 13: #include "pa_request.h"
14: #include "_table.h"
15: #include "pa_vtable.h"
1.6 paf 16: #include "pa_vint.h"
1.1 paf 17:
18: // global var
19:
1.14 paf 20: VStateless_class *table_class;
1.1 paf 21:
22: // methods
23:
1.2 paf 24: static void set_or_load(
25: Request& r,
26: const String& method_name, Array *params,
27: bool is_load) {
1.1 paf 28: Pool& pool=r.pool();
29: // data is last parameter
1.21 paf 30: Value *vdata_or_filename=static_cast<Value *>(params->get(params->size()-1));
1.4 paf 31: // forcing
1.21 paf 32: // ^load[this file name type]
1.17 paf 33: // ^set{this body type}
1.21 paf 34: r.fail_if_junction_(is_load, *vdata_or_filename,
35: method_name, is_load?"file name must not be junction":"body must be junction");
1.1 paf 36:
1.2 paf 37: // data or file_name
1.25 paf 38: char *data;
1.21 paf 39: if(is_load) {
40: // forcing untaint language
41: String lfile_name(pool);
1.25 paf 42: lfile_name.append(vdata_or_filename->as_string(), String::UL_FILE_NAME, true);
43: // loading text
44: data=file_read_text(pool, r.absolute(lfile_name));
1.21 paf 45: } else {
46: // suggesting untaint language
1.23 paf 47: Temp_lang temp_lang(r, String::UL_TABLE);
1.25 paf 48: data=r.process(*vdata_or_filename).as_string().cstr();
1.17 paf 49: }
1.1 paf 50:
51: // parse columns
52: Array *columns;
53: #ifndef NO_STRING_ORIGIN
54: const Origin& origin=method_name.origin();
1.2 paf 55: const char *file=origin.file;
1.1 paf 56: uint line=origin.line;
57: #endif
58: if(params->size()==2) {
59: columns=0;
60: } else {
61: columns=new(pool) Array(pool);
62:
63: if(char *row_chars=getrow(&data))
64: do {
65: String *name=new(pool) String(pool);
66: name->APPEND(lsplit(&row_chars, '\t'), 0, file, line++);
67: *columns+=name;
68: } while(row_chars);
69: }
70:
71: // parse cells
1.27 ! paf 72: Table& table=*new(pool) Table(pool, &method_name, columns);
1.1 paf 73: char *row_chars;
74: while(row_chars=getrow(&data)) {
75: Array *row=new(pool) Array(pool);
76: while(char *cell_chars=lsplit(&row_chars, '\t')) {
77: String *cell=new(pool) String(pool);
78: cell->APPEND(cell_chars, 0, file, line);
79: *row+=cell;
80: }
81: line++;
82: table+=row;
83: };
84:
85: // replace any previous table value
1.18 paf 86: static_cast<VTable *>(r.self)->set_table(table);
1.1 paf 87: }
88:
1.2 paf 89:
90: static void _set(Request& r, const String& method_name, Array *params) {
91: set_or_load(r, method_name, params, false);
92: }
93:
94: static void _load(Request& r, const String& method_name, Array *params) {
95: set_or_load(r, method_name, params, true);
96: }
97:
1.22 paf 98: static void _save(Request& r, const String& method_name, Array *params) {
99: Pool& pool=r.pool();
100: Value *vfile_name=static_cast<Value *>(params->get(params->size()-1));
101: // forcing
102: // ^save[this body type]
103: r.fail_if_junction_(true, *vfile_name,
104: method_name, "file name must not be junction");
105:
106: // forcing untaint language
107: String lfile_name(pool);
108: lfile_name.append(vfile_name->as_string(),
1.23 paf 109: String::UL_FILE_NAME, true);
1.22 paf 110:
111: Table& table=static_cast<VTable *>(r.self)->table();
112:
113: String sdata(pool);
114: if(params->size()==1) { // not nameless=named output
115: // write out names line
116: if(const Array *columns=table.columns()) { // named table
117: for(int column=0; column<columns->size(); column++) {
118: if(column)
119: sdata.APPEND_CONST("\t");
120: sdata.append(*static_cast<String *>(columns->quick_get(column)),
1.23 paf 121: String::UL_TABLE);
1.22 paf 122: }
123: } else { // nameless table
124: int size=table.size()?static_cast<Array *>(table.get(0))->size():0;
125: if(size)
126: for(int column=0; column<size; column++) {
127: char *cindex_tab=(char *)pool.malloc(MAX_NUMBER);
128: snprintf(cindex_tab, MAX_NUMBER, "%d\t", column);
129: sdata.APPEND_CONST(cindex_tab);
130: }
131: else
132: sdata.APPEND_CONST("empty nameless table");
133: }
134: sdata.APPEND_CONST("\n");
135: }
136: // data lines
137: for(int index=0; index<table.size(); index++) {
138: Array *row=static_cast<Array *>(table.quick_get(index));
139: for(int column=0; column<row->size(); column++) {
140: if(column)
141: sdata.APPEND_CONST("\t");
142: sdata.append(*static_cast<String *>(row->quick_get(column)),
1.23 paf 143: String::UL_TABLE);
1.22 paf 144: }
145: sdata.APPEND_CONST("\n");
146: }
147:
148: // write
149: char *cdata=sdata.cstr();
1.25 paf 150: file_write(pool, r.absolute(lfile_name), cdata, strlen(cdata), true);
1.22 paf 151: }
152:
1.6 paf 153: static void _count(Request& r, const String&, Array *) {
154: Pool& pool=r.pool();
1.18 paf 155: Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size());
1.15 paf 156: r.write_no_lang(value);
1.6 paf 157: }
158:
159: static void _line(Request& r, const String&, Array *) {
160: Pool& pool=r.pool();
1.18 paf 161: Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().get_current());
1.15 paf 162: r.write_no_lang(value);
1.6 paf 163: }
164:
165: static void _offset(Request& r, const String&, Array *params) {
166: Pool& pool=r.pool();
1.18 paf 167: Table& table=static_cast<VTable *>(r.self)->table();
1.6 paf 168: if(params->size()) {
169: if(int size=table.size()) {
1.9 paf 170: int offset=
171: (int)r.process(*static_cast<Value *>(params->get(0))).get_double();
1.6 paf 172: table.set_current((table.get_current()+offset+size)%size);
173: }
174: } else {
175: Value& value=*new(pool) VInt(pool, table.get_current());
1.15 paf 176: r.write_no_lang(value);
1.6 paf 177: }
178: }
179:
1.7 paf 180: static void _menu(Request& r, const String& method_name, Array *params) {
181: Value& body_code=*static_cast<Value *>(params->get(0));
182: // forcing ^menu{this param type}
183: r.fail_if_junction_(false, body_code,
184: method_name, "body must be junction");
185:
186: Value *delim_code=params->size()==2?static_cast<Value *>(params->get(1)):0;
187:
1.18 paf 188: Table& table=static_cast<VTable *>(r.self)->table();
1.7 paf 189: bool need_delim=false;
1.22 paf 190: for(int row=0; row<table.size(); row++) {
191: table.set_current(row);
1.7 paf 192:
1.12 paf 193: Value& processed_body=r.process(body_code);
1.7 paf 194: if(delim_code) { // delimiter set?
195: const String *string=processed_body.get_string();
196: if(need_delim && string && string->size()) // need delim & iteration produced string?
197: r.write_pass_lang(r.process(*delim_code));
198: need_delim=true;
199: }
200: r.write_pass_lang(processed_body);
201: }
202: }
203:
1.8 paf 204: static void _empty(Request& r, const String&, Array *params) {
1.18 paf 205: Table& table=static_cast<VTable *>(r.self)->table();
1.8 paf 206: if(table.size()==0) {
207: Value& value=r.process(*static_cast<Value *>(params->get(0)));
208: r.write_pass_lang(value);
209: } else if(params->size()==2) {
210: Value& value=r.process(*static_cast<Value *>(params->get(1)));
211: r.write_pass_lang(value);
212: }
213: }
1.15 paf 214:
215: // initialize
1.8 paf 216:
1.14 paf 217: void initialize_table_class(Pool& pool, VStateless_class& vclass) {
1.22 paf 218: // ^table.set{data}
219: // ^table.set[nameless]{data}
1.1 paf 220: vclass.add_native_method("set", _set, 1, 2);
1.2 paf 221:
1.10 paf 222: // ^table.load[file]
223: // ^table.load[nameless;file]
1.2 paf 224: vclass.add_native_method("load", _load, 1, 2);
1.22 paf 225:
226: // ^table.save[file]
227: // ^table.save[nameless;file]
228: vclass.add_native_method("save", _save, 1, 2);
1.6 paf 229:
230: // ^table.count[]
231: vclass.add_native_method("count", _count, 0, 0);
232:
233: // ^table.line[]
234: vclass.add_native_method("line", _line, 0, 0);
235:
1.10 paf 236: // ^table.offset[]
237: // ^table.offset[offset]
1.6 paf 238: vclass.add_native_method("offset", _offset, 0, 1);
1.7 paf 239:
1.10 paf 240: // ^table.menu{code}
241: // ^table.menu{code}[delim]
1.7 paf 242: vclass.add_native_method("menu", _menu, 1, 2);
1.8 paf 243:
1.10 paf 244: // ^table.empty{code-when-empty}
245: // ^table.empty{code-when-empty}{code-when-not}
1.8 paf 246: vclass.add_native_method("empty", _empty, 1, 2);
247:
1.1 paf 248: }
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