augustoasilva commented on a change in pull request #10711:
URL: https://github.com/apache/arrow/pull/10711#discussion_r669990486
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File path: cpp/src/gandiva/precompiled/time.cc
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@@ -841,6 +843,161 @@ gdv_int64
castBIGINT_daytimeinterval(gdv_day_time_interval in) {
extractDay_daytimeinterval(in) * MILLIS_IN_DAY;
}
+FORCE_INLINE
+const char* from_unixtime_int64(gdv_int64 context, gdv_timestamp in,
gdv_int32* out_len) {
+ gdv_int64 year = extractYear_timestamp(in);
+ gdv_int64 month = extractMonth_timestamp(in);
+ gdv_int64 day = extractDay_timestamp(in);
+ gdv_int64 hour = extractHour_timestamp(in);
+ gdv_int64 minute = extractMinute_timestamp(in);
+ gdv_int64 second = extractSecond_timestamp(in);
+
+ static const int kTimeStampStringLen = 19;
+ const int char_buffer_length = kTimeStampStringLen + 1; // snprintf adds \0
+ char char_buffer[char_buffer_length];
+
+ // yyyy-MM-dd hh:mm:ss
+ int res = snprintf(char_buffer, char_buffer_length,
+ "%04" PRId64 "-%02" PRId64 "-%02" PRId64 " %02" PRId64
":%02" PRId64
+ ":%02" PRId64,
+ year, month, day, hour, minute, second);
+ if (res < 0) {
+ gdv_fn_context_set_error_msg(context, "Could not format the timestamp");
+ *out_len = 0;
+ return "";
+ }
+
+ *out_len = kTimeStampStringLen;
+
+ if (*out_len <= 0) {
+ if (*out_len < 0) {
+ gdv_fn_context_set_error_msg(context, "Length of output string cannot be
negative");
+ }
+ *out_len = 0;
+ return "";
+ }
+
+ char* ret = reinterpret_cast<char*>(gdv_fn_context_arena_malloc(context,
*out_len));
+ if (ret == nullptr) {
+ gdv_fn_context_set_error_msg(context, "Could not allocate memory for
output string");
+ *out_len = 0;
+ return "";
+ }
+
+ memcpy(ret, char_buffer, *out_len);
+ return ret;
+}
+
+FORCE_INLINE
+const char* from_unixtime_int64_utf8(gdv_int64 context, gdv_timestamp in,
+ const char* pattern, gdv_int32
pattern_len,
+ gdv_int32* out_len) {
+ gdv_int64 year = extractYear_timestamp(in);
+ gdv_int64 month = extractMonth_timestamp(in);
+ gdv_int64 day = extractDay_timestamp(in);
+ gdv_int64 hour = extractHour_timestamp(in);
+ gdv_int64 minute = extractMinute_timestamp(in);
+ gdv_int64 second = extractSecond_timestamp(in);
+ gdv_int64 millis = in % MILLIS_IN_SEC;
+
+ if (pattern_len <= 0) {
+ gdv_fn_context_set_error_msg(context, "Invalid allowed pattern size");
+ *out_len = 0;
+ return "";
+ }
+
+ static const int kTimeStampStringLen = pattern_len;
+ const int char_buffer_length = kTimeStampStringLen + 1; // snprintf adds \0
+ char char_buffer[char_buffer_length];
+
+ const char* regex_format =
+ "y{4}(-[M]{2})?+.*?(-[d]{2})?+.*?( [h]{2})?+.*?"
+ "(:[mm]{2})?+.*?(:[s]{2})?+.*?(.[s]{3})?+.*?";
+ bool match = std::regex_match(pattern, std::regex(regex_format));
Review comment:
Ok, I will do it.
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