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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:17:33 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:17:33 +0000 |
commit | 5e45211a64149b3c659b90ff2de6fa982a5a93ed (patch) | |
tree | 739caf8c461053357daa9f162bef34516c7bf452 /src/port/quotes.c | |
parent | Initial commit. (diff) | |
download | postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.tar.xz postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.zip |
Adding upstream version 15.5.upstream/15.5
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/port/quotes.c')
-rw-r--r-- | src/port/quotes.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/port/quotes.c b/src/port/quotes.c new file mode 100644 index 0000000..d90a456 --- /dev/null +++ b/src/port/quotes.c @@ -0,0 +1,51 @@ +/*------------------------------------------------------------------------- + * + * quotes.c + * string quoting and escaping functions + * + * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * + * IDENTIFICATION + * src/port/quotes.c + * + *------------------------------------------------------------------------- + */ + +#include "c.h" + +/* + * Escape (by doubling) any single quotes or backslashes in given string + * + * Note: this is used to process postgresql.conf entries and to quote + * string literals in pg_basebackup for writing the recovery configuration. + * Since postgresql.conf strings are defined to treat backslashes as escapes, + * we have to double backslashes here. + * + * Since this function is only used for parsing or creating configuration + * files, we do not care about encoding considerations. + * + * Returns a malloced() string that it's the responsibility of the caller + * to free. + */ +char * +escape_single_quotes_ascii(const char *src) +{ + int len = strlen(src), + i, + j; + char *result = malloc(len * 2 + 1); + + if (!result) + return NULL; + + for (i = 0, j = 0; i < len; i++) + { + if (SQL_STR_DOUBLE(src[i], true)) + result[j++] = src[i]; + result[j++] = src[i]; + } + result[j] = '\0'; + return result; +} |