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percentrepl.h File Reference
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Functions

char * replace_percent_placeholders (const char *instr, const char *param_name, const char *letters,...)
 

Function Documentation

◆ replace_percent_placeholders()

char * replace_percent_placeholders ( const char *  instr,
const char *  param_name,
const char *  letters,
  ... 
)

Definition at line 59 of file percentrepl.c.

60{
61 StringInfoData result;
62
63 initStringInfo(&result);
64
65 for (const char *sp = instr; *sp; sp++)
66 {
67 if (*sp == '%')
68 {
69 if (sp[1] == '%')
70 {
71 /* Convert %% to a single % */
72 sp++;
73 appendStringInfoChar(&result, *sp);
74 }
75 else if (sp[1] == '\0')
76 {
77 /* Incomplete escape sequence, expected a character afterward */
78#ifdef FRONTEND
79 pg_log_error("invalid value for parameter \"%s\": \"%s\"", param_name, instr);
80 pg_log_error_detail("String ends unexpectedly after escape character \"%%\".");
81 exit(1);
82#else
83 ereport(ERROR,
84 errcode(ERRCODE_INVALID_PARAMETER_VALUE),
85 errmsg("invalid value for parameter \"%s\": \"%s\"", param_name, instr),
86 errdetail("String ends unexpectedly after escape character \"%%\"."));
87#endif
88 }
89 else
90 {
91 /* Look up placeholder character */
92 bool found = false;
93 va_list ap;
94
95 sp++;
96
97 va_start(ap, letters);
98 for (const char *lp = letters; *lp; lp++)
99 {
100 char *val = va_arg(ap, char *);
101
102 if (*sp == *lp)
103 {
104 if (val)
105 {
106 appendStringInfoString(&result, val);
107 found = true;
108 }
109 /* If val is NULL, we will report an error. */
110 break;
111 }
112 }
113 va_end(ap);
114 if (!found)
115 {
116 /* Unknown placeholder */
117#ifdef FRONTEND
118 pg_log_error("invalid value for parameter \"%s\": \"%s\"", param_name, instr);
119 pg_log_error_detail("String contains unexpected placeholder \"%%%c\".", *sp);
120 exit(1);
121#else
122 ereport(ERROR,
123 errcode(ERRCODE_INVALID_PARAMETER_VALUE),
124 errmsg("invalid value for parameter \"%s\": \"%s\"", param_name, instr),
125 errdetail("String contains unexpected placeholder \"%%%c\".", *sp));
126#endif
127 }
128 }
129 }
130 else
131 {
132 appendStringInfoChar(&result, *sp);
133 }
134 }
135
136 return result.data;
137}
errdetail
int errdetail(const char *fmt,...)
Definition: elog.c:1204
errcode
int errcode(int sqlerrcode)
Definition: elog.c:854
errmsg
int errmsg(const char *fmt,...)
Definition: elog.c:1071
ERROR
#define ERROR
Definition: elog.h:39
ereport
#define ereport(elevel,...)
Definition: elog.h:149
val
long val
Definition: informix.c:689
pg_log_error
#define pg_log_error(...)
Definition: logging.h:106
pg_log_error_detail
#define pg_log_error_detail(...)
Definition: logging.h:109
appendStringInfoString
void appendStringInfoString(StringInfo str, const char *s)
Definition: stringinfo.c:230
appendStringInfoChar
void appendStringInfoChar(StringInfo str, char ch)
Definition: stringinfo.c:242
initStringInfo
void initStringInfo(StringInfo str)
Definition: stringinfo.c:97

References appendStringInfoChar(), appendStringInfoString(), StringInfoData::data, ereport, errcode(), errdetail(), errmsg(), ERROR, initStringInfo(), pg_log_error, pg_log_error_detail, and val.

Referenced by BuildRestoreCommand(), ExecuteRecoveryCommand(), run_ssl_passphrase_command(), shell_archive_file(), and shell_construct_command().