Annotation of parser3/src/classes/table.C, revision 1.23
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:
1.23 ! paf 8: $Id: table.C,v 1.22.2.2 2001/03/20 18:24:39 paf Exp $
1.1 paf 9: */
10:
1.22 paf 11: #include <string.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
1.21 paf 38: char *ldata_or_filename;
39: if(is_load) {
40: // forcing untaint language
41: String lfile_name(pool);
42: lfile_name.append(vdata_or_filename->as_string(),
1.23 ! paf 43: String::UL_FILE_NAME, true);
1.21 paf 44: ldata_or_filename=lfile_name.cstr();
45: } else {
46: // suggesting untaint language
1.23 ! paf 47: Temp_lang temp_lang(r, String::UL_TABLE);
1.21 paf 48: ldata_or_filename=r.process(*vdata_or_filename).as_string().cstr();
1.17 paf 49: }
1.2 paf 50: // data
1.21 paf 51: char *data=is_load?
1.22 paf 52: file_read_text(pool, r.absolute(ldata_or_filename)/*\, false*/):ldata_or_filename;
1.1 paf 53:
54: // parse columns
55: Array *columns;
56: #ifndef NO_STRING_ORIGIN
57: const Origin& origin=method_name.origin();
1.2 paf 58: const char *file=origin.file;
1.1 paf 59: uint line=origin.line;
60: #endif
61: if(params->size()==2) {
62: columns=0;
63: } else {
64: columns=new(pool) Array(pool);
65:
66: if(char *row_chars=getrow(&data))
67: do {
68: String *name=new(pool) String(pool);
69: name->APPEND(lsplit(&row_chars, '\t'), 0, file, line++);
70: *columns+=name;
71: } while(row_chars);
72: }
73:
74: // parse cells
75: Table& table=*new(pool) Table(pool, method_name, columns);
76: char *row_chars;
77: while(row_chars=getrow(&data)) {
78: Array *row=new(pool) Array(pool);
79: while(char *cell_chars=lsplit(&row_chars, '\t')) {
80: String *cell=new(pool) String(pool);
81: cell->APPEND(cell_chars, 0, file, line);
82: *row+=cell;
83: }
84: line++;
85: table+=row;
86: };
87:
88: // replace any previous table value
1.18 paf 89: static_cast<VTable *>(r.self)->set_table(table);
1.1 paf 90: }
91:
1.2 paf 92:
93: static void _set(Request& r, const String& method_name, Array *params) {
94: set_or_load(r, method_name, params, false);
95: }
96:
97: static void _load(Request& r, const String& method_name, Array *params) {
98: set_or_load(r, method_name, params, true);
99: }
100:
1.22 paf 101: static void _save(Request& r, const String& method_name, Array *params) {
102: Pool& pool=r.pool();
103: Value *vfile_name=static_cast<Value *>(params->get(params->size()-1));
104: // forcing
105: // ^save[this body type]
106: r.fail_if_junction_(true, *vfile_name,
107: method_name, "file name must not be junction");
108:
109: // forcing untaint language
110: String lfile_name(pool);
111: lfile_name.append(vfile_name->as_string(),
1.23 ! paf 112: String::UL_FILE_NAME, true);
1.22 paf 113:
114: Table& table=static_cast<VTable *>(r.self)->table();
115:
116: String sdata(pool);
117: if(params->size()==1) { // not nameless=named output
118: // write out names line
119: if(const Array *columns=table.columns()) { // named table
120: for(int column=0; column<columns->size(); column++) {
121: if(column)
122: sdata.APPEND_CONST("\t");
123: sdata.append(*static_cast<String *>(columns->quick_get(column)),
1.23 ! paf 124: String::UL_TABLE);
1.22 paf 125: }
126: } else { // nameless table
127: int size=table.size()?static_cast<Array *>(table.get(0))->size():0;
128: if(size)
129: for(int column=0; column<size; column++) {
130: char *cindex_tab=(char *)pool.malloc(MAX_NUMBER);
131: snprintf(cindex_tab, MAX_NUMBER, "%d\t", column);
132: sdata.APPEND_CONST(cindex_tab);
133: }
134: else
135: sdata.APPEND_CONST("empty nameless table");
136: }
137: sdata.APPEND_CONST("\n");
138: }
139: // data lines
140: for(int index=0; index<table.size(); index++) {
141: Array *row=static_cast<Array *>(table.quick_get(index));
142: for(int column=0; column<row->size(); column++) {
143: if(column)
144: sdata.APPEND_CONST("\t");
145: sdata.append(*static_cast<String *>(row->quick_get(column)),
1.23 ! paf 146: String::UL_TABLE);
1.22 paf 147: }
148: sdata.APPEND_CONST("\n");
149: }
150:
151: // write
152: char *cdata=sdata.cstr();
1.23 ! paf 153: file_write(pool, r.absolute(lfile_name.cstr()), cdata, strlen(cdata), true);
1.22 paf 154: }
155:
1.6 paf 156: static void _count(Request& r, const String&, Array *) {
157: Pool& pool=r.pool();
1.18 paf 158: Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size());
1.15 paf 159: r.write_no_lang(value);
1.6 paf 160: }
161:
162: static void _line(Request& r, const String&, Array *) {
163: Pool& pool=r.pool();
1.18 paf 164: Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().get_current());
1.15 paf 165: r.write_no_lang(value);
1.6 paf 166: }
167:
168: static void _offset(Request& r, const String&, Array *params) {
169: Pool& pool=r.pool();
1.18 paf 170: Table& table=static_cast<VTable *>(r.self)->table();
1.6 paf 171: if(params->size()) {
172: if(int size=table.size()) {
1.9 paf 173: int offset=
174: (int)r.process(*static_cast<Value *>(params->get(0))).get_double();
1.6 paf 175: table.set_current((table.get_current()+offset+size)%size);
176: }
177: } else {
178: Value& value=*new(pool) VInt(pool, table.get_current());
1.15 paf 179: r.write_no_lang(value);
1.6 paf 180: }
181: }
182:
1.7 paf 183: static void _menu(Request& r, const String& method_name, Array *params) {
184: Value& body_code=*static_cast<Value *>(params->get(0));
185: // forcing ^menu{this param type}
186: r.fail_if_junction_(false, body_code,
187: method_name, "body must be junction");
188:
189: Value *delim_code=params->size()==2?static_cast<Value *>(params->get(1)):0;
190:
1.18 paf 191: Table& table=static_cast<VTable *>(r.self)->table();
1.7 paf 192: bool need_delim=false;
1.22 paf 193: for(int row=0; row<table.size(); row++) {
194: table.set_current(row);
1.7 paf 195:
1.12 paf 196: Value& processed_body=r.process(body_code);
1.7 paf 197: if(delim_code) { // delimiter set?
198: const String *string=processed_body.get_string();
199: if(need_delim && string && string->size()) // need delim & iteration produced string?
200: r.write_pass_lang(r.process(*delim_code));
201: need_delim=true;
202: }
203: r.write_pass_lang(processed_body);
204: }
205: }
206:
1.8 paf 207: static void _empty(Request& r, const String&, Array *params) {
1.18 paf 208: Table& table=static_cast<VTable *>(r.self)->table();
1.8 paf 209: if(table.size()==0) {
210: Value& value=r.process(*static_cast<Value *>(params->get(0)));
211: r.write_pass_lang(value);
212: } else if(params->size()==2) {
213: Value& value=r.process(*static_cast<Value *>(params->get(1)));
214: r.write_pass_lang(value);
215: }
216: }
1.15 paf 217:
218: // initialize
1.8 paf 219:
1.14 paf 220: void initialize_table_class(Pool& pool, VStateless_class& vclass) {
1.22 paf 221: // ^table.set{data}
222: // ^table.set[nameless]{data}
1.1 paf 223: vclass.add_native_method("set", _set, 1, 2);
1.2 paf 224:
1.10 paf 225: // ^table.load[file]
226: // ^table.load[nameless;file]
1.2 paf 227: vclass.add_native_method("load", _load, 1, 2);
1.22 paf 228:
229: // ^table.save[file]
230: // ^table.save[nameless;file]
231: vclass.add_native_method("save", _save, 1, 2);
1.6 paf 232:
233: // ^table.count[]
234: vclass.add_native_method("count", _count, 0, 0);
235:
236: // ^table.line[]
237: vclass.add_native_method("line", _line, 0, 0);
238:
1.10 paf 239: // ^table.offset[]
240: // ^table.offset[offset]
1.6 paf 241: vclass.add_native_method("offset", _offset, 0, 1);
1.7 paf 242:
1.10 paf 243: // ^table.menu{code}
244: // ^table.menu{code}[delim]
1.7 paf 245: vclass.add_native_method("menu", _menu, 1, 2);
1.8 paf 246:
1.10 paf 247: // ^table.empty{code-when-empty}
248: // ^table.empty{code-when-empty}{code-when-not}
1.8 paf 249: vclass.add_native_method("empty", _empty, 1, 2);
250:
1.1 paf 251: }
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