Line data Source code
1 : /* src/interfaces/ecpg/preproc/output.c */
2 :
3 : #include "postgres_fe.h"
4 :
5 : #include "preproc_extern.h"
6 :
7 : static void output_escaped_str(const char *str, bool quoted);
8 :
9 : void
10 0 : output_line_number(void)
11 : {
12 0 : char *line = hashline_number();
13 :
14 0 : fprintf(base_yyout, "%s", line);
15 0 : }
16 :
17 : void
18 0 : output_simple_statement(const char *stmt, int whenever_mode)
19 : {
20 0 : output_escaped_str(stmt, false);
21 0 : if (whenever_mode)
22 0 : whenever_action(whenever_mode);
23 0 : output_line_number();
24 0 : }
25 :
26 :
27 : /*
28 : * store the whenever action here
29 : */
30 : struct when when_error,
31 : when_nf,
32 : when_warn;
33 :
34 : static void
35 0 : print_action(struct when *w)
36 : {
37 0 : switch (w->code)
38 : {
39 : case W_SQLPRINT:
40 0 : fprintf(base_yyout, "sqlprint();");
41 0 : break;
42 : case W_GOTO:
43 0 : fprintf(base_yyout, "goto %s;", w->command);
44 0 : break;
45 : case W_DO:
46 0 : fprintf(base_yyout, "%s;", w->command);
47 0 : break;
48 : case W_STOP:
49 0 : fprintf(base_yyout, "exit (1);");
50 0 : break;
51 : case W_BREAK:
52 0 : fprintf(base_yyout, "break;");
53 0 : break;
54 : case W_CONTINUE:
55 0 : fprintf(base_yyout, "continue;");
56 0 : break;
57 : default:
58 0 : fprintf(base_yyout, "{/* %d not implemented yet */}", w->code);
59 0 : break;
60 : }
61 0 : }
62 :
63 : void
64 0 : whenever_action(int mode)
65 : {
66 0 : if ((mode & 1) == 1 && when_nf.code != W_NOTHING)
67 : {
68 0 : output_line_number();
69 0 : fprintf(base_yyout, "\nif (sqlca.sqlcode == ECPG_NOT_FOUND) ");
70 0 : print_action(&when_nf);
71 0 : }
72 0 : if (when_warn.code != W_NOTHING)
73 : {
74 0 : output_line_number();
75 0 : fprintf(base_yyout, "\nif (sqlca.sqlwarn[0] == 'W') ");
76 0 : print_action(&when_warn);
77 0 : }
78 0 : if (when_error.code != W_NOTHING)
79 : {
80 0 : output_line_number();
81 0 : fprintf(base_yyout, "\nif (sqlca.sqlcode < 0) ");
82 0 : print_action(&when_error);
83 0 : }
84 :
85 0 : if ((mode & 2) == 2)
86 0 : fputc('}', base_yyout);
87 :
88 0 : output_line_number();
89 0 : }
90 :
91 : char *
92 0 : hashline_number(void)
93 : {
94 : /* do not print line numbers if we are in debug mode */
95 0 : if (input_filename
96 : #ifdef YYDEBUG
97 : && !base_yydebug
98 : #endif
99 : )
100 : {
101 : /* "* 2" here is for escaping '\' and '"' below */
102 0 : char *line = loc_alloc(strlen("\n#line %d \"%s\"\n") + sizeof(int) * CHAR_BIT * 10 / 3 + strlen(input_filename) * 2);
103 0 : char *src,
104 : *dest;
105 :
106 0 : sprintf(line, "\n#line %d \"", base_yylineno);
107 0 : src = input_filename;
108 0 : dest = line + strlen(line);
109 0 : while (*src)
110 : {
111 0 : if (*src == '\\' || *src == '"')
112 0 : *dest++ = '\\';
113 0 : *dest++ = *src++;
114 : }
115 0 : *dest = '\0';
116 0 : strcat(dest, "\"\n");
117 :
118 0 : return line;
119 0 : }
120 :
121 0 : return "";
122 0 : }
123 :
124 : static char *ecpg_statement_type_name[] = {
125 : "ECPGst_normal",
126 : "ECPGst_execute",
127 : "ECPGst_exec_immediate",
128 : "ECPGst_prepnormal",
129 : "ECPGst_prepare",
130 : "ECPGst_exec_with_exprlist"
131 : };
132 :
133 : void
134 0 : output_statement(const char *stmt, int whenever_mode, enum ECPG_statement_type st)
135 : {
136 0 : fprintf(base_yyout, "{ ECPGdo(__LINE__, %d, %d, %s, %d, ", compat, force_indicator, connection ? connection : "NULL", questionmarks);
137 :
138 0 : if (st == ECPGst_prepnormal && !auto_prepare)
139 0 : st = ECPGst_normal;
140 :
141 : /*
142 : * In following cases, stmt is CSTRING or char_variable. They must be
143 : * output directly. - prepared_name of EXECUTE without exprlist -
144 : * execstring of EXECUTE IMMEDIATE
145 : */
146 0 : fprintf(base_yyout, "%s, ", ecpg_statement_type_name[st]);
147 0 : if (st == ECPGst_execute || st == ECPGst_exec_immediate)
148 0 : fprintf(base_yyout, "%s, ", stmt);
149 : else
150 : {
151 0 : fputs("\"", base_yyout);
152 0 : output_escaped_str(stmt, false);
153 0 : fputs("\", ", base_yyout);
154 : }
155 :
156 : /* dump variables to C file */
157 0 : dump_variables(argsinsert, 1);
158 0 : argsinsert = NULL;
159 0 : fputs("ECPGt_EOIT, ", base_yyout);
160 0 : dump_variables(argsresult, 1);
161 0 : argsresult = NULL;
162 0 : fputs("ECPGt_EORT);", base_yyout);
163 :
164 0 : whenever_action(whenever_mode | 2);
165 0 : }
166 :
167 : void
168 0 : output_prepare_statement(const char *name, const char *stmt)
169 : {
170 0 : fprintf(base_yyout, "{ ECPGprepare(__LINE__, %s, %d, ", connection ? connection : "NULL", questionmarks);
171 0 : output_escaped_str(name, true);
172 0 : fputs(", ", base_yyout);
173 0 : output_escaped_str(stmt, true);
174 0 : fputs(");", base_yyout);
175 0 : whenever_action(2);
176 0 : }
177 :
178 : void
179 0 : output_deallocate_prepare_statement(const char *name)
180 : {
181 0 : const char *con = connection ? connection : "NULL";
182 :
183 0 : if (strcmp(name, "all") != 0)
184 : {
185 0 : fprintf(base_yyout, "{ ECPGdeallocate(__LINE__, %d, %s, ", compat, con);
186 0 : output_escaped_str(name, true);
187 0 : fputs(");", base_yyout);
188 0 : }
189 : else
190 0 : fprintf(base_yyout, "{ ECPGdeallocate_all(__LINE__, %d, %s);", compat, con);
191 :
192 0 : whenever_action(2);
193 0 : }
194 :
195 : static void
196 0 : output_escaped_str(const char *str, bool quoted)
197 : {
198 0 : int i = 0;
199 0 : int len = strlen(str);
200 :
201 0 : if (quoted && str[0] == '"' && str[len - 1] == '"') /* do not escape quotes
202 : * at beginning and end
203 : * if quoted string */
204 : {
205 0 : i = 1;
206 0 : len--;
207 0 : fputs("\"", base_yyout);
208 0 : }
209 :
210 : /* output this char by char as we have to filter " and \n */
211 0 : for (; i < len; i++)
212 : {
213 0 : if (str[i] == '"')
214 0 : fputs("\\\"", base_yyout);
215 0 : else if (str[i] == '\n')
216 0 : fputs("\\\n", base_yyout);
217 0 : else if (str[i] == '\\')
218 : {
219 0 : int j = i;
220 :
221 : /*
222 : * check whether this is a continuation line if it is, do not
223 : * output anything because newlines are escaped anyway
224 : */
225 :
226 : /* accept blanks after the '\' as some other compilers do too */
227 0 : do
228 : {
229 0 : j++;
230 0 : } while (str[j] == ' ' || str[j] == '\t');
231 :
232 0 : if ((str[j] != '\n') && (str[j] != '\r' || str[j + 1] != '\n')) /* not followed by a
233 : * newline */
234 0 : fputs("\\\\", base_yyout);
235 0 : }
236 0 : else if (str[i] == '\r' && str[i + 1] == '\n')
237 : {
238 0 : fputs("\\\r\n", base_yyout);
239 0 : i++;
240 0 : }
241 : else
242 0 : fputc(str[i], base_yyout);
243 0 : }
244 :
245 0 : if (quoted && str[0] == '"' && str[len] == '"')
246 0 : fputs("\"", base_yyout);
247 0 : }
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