diff options
Diffstat (limited to 'src/fe_utils/string_utils.c')
| -rw-r--r-- | src/fe_utils/string_utils.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/fe_utils/string_utils.c b/src/fe_utils/string_utils.c index f986dbcf39b..2c566b1ad75 100644 --- a/src/fe_utils/string_utils.c +++ b/src/fe_utils/string_utils.c @@ -169,6 +169,44 @@ fmtQualifiedId(int remoteVersion, const char *schema, const char *id) /* + * Format a Postgres version number (in the PG_VERSION_NUM integer format + * returned by PQserverVersion()) as a string. This exists mainly to + * encapsulate knowledge about two-part vs. three-part version numbers. + * + * For re-entrancy, caller must supply the buffer the string is put in. + * Recommended size of the buffer is 32 bytes. + * + * Returns address of 'buf', as a notational convenience. + */ +char * +formatPGVersionNumber(int version_number, bool include_minor, + char *buf, size_t buflen) +{ + if (version_number >= 100000) + { + /* New two-part style */ + if (include_minor) + snprintf(buf, buflen, "%d.%d", version_number / 10000, + version_number % 10000); + else + snprintf(buf, buflen, "%d", version_number / 10000); + } + else + { + /* Old three-part style */ + if (include_minor) + snprintf(buf, buflen, "%d.%d.%d", version_number / 10000, + (version_number / 100) % 100, + version_number % 100); + else + snprintf(buf, buflen, "%d.%d", version_number / 10000, + (version_number / 100) % 100); + } + return buf; +} + + +/* * Convert a string value to an SQL string literal and append it to * the given buffer. We assume the specified client_encoding and * standard_conforming_strings settings. |