Factor out format_std_tm() helper

Don't repeat the same snprintf() call for formatting dates in several places. No real changes.
SOCI · Aug 19, 2024 · 5a300fe · 5a300fe
1 parent a4fc400
commit 5a300fe
Show file tree

Hide file tree

Showing 8 changed files with 34 additions and 29 deletions.
diff --git a/include/private/soci-mktime.h b/include/private/soci-mktime.h
@@ -62,6 +62,17 @@ mktime_from_ymdhms(tm& t,
 // Throws if the string in buf couldn't be parsed as a date or a time string.
 SOCI_DECL void parse_std_tm(char const *buf, std::tm &t);
 
+// Reverse function for formatting datetime values.
+//
+// The string returned in the buffer uses YYYY-MM-DD HH:MM:SS format.
+inline int format_std_tm(std::tm const& t, char* buf, std::size_t len)
+{
+    return snprintf(buf, len,
+        "%d-%02d-%02d %02d:%02d:%02d",
+        t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
+        t.tm_hour, t.tm_min, t.tm_sec);
+}
+
 } // namespace details
 
 } // namespace soci

diff --git a/src/backends/mysql/standard-use-type.cpp b/src/backends/mysql/standard-use-type.cpp
@@ -12,6 +12,7 @@
 #include "soci/soci-platform.h"
 #include "soci-dtocstr.h"
 #include "soci-exchange-cast.h"
+#include "soci-mktime.h"
 #include "soci/blob.h"
 // std
 #include <ciso646>
@@ -153,11 +154,12 @@ void mysql_standard_use_type_backend::pre_use(indicator const *ind)
                 std::size_t const bufSize = 80;
                 buf_ = new char[bufSize];
 
-                std::tm const& t = exchange_type_cast<x_stdtm>(data_);
-                snprintf(buf_, bufSize,
-                    "\'%d-%02d-%02d %02d:%02d:%02d\'",
-                    t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
-                    t.tm_hour, t.tm_min, t.tm_sec);
+                int n = 0;
+                buf_[n++] = '\'';
+                n += format_std_tm(exchange_type_cast<x_stdtm>(data_),
+                                   buf_ + n, bufSize - n - 1);
+                buf_[n++] = '\'';
+                buf_[n] = '\0';
             }
             break;
         case x_blob:

diff --git a/src/backends/mysql/vector-use-type.cpp b/src/backends/mysql/vector-use-type.cpp
@@ -11,6 +11,7 @@
 #include "common.h"
 #include "soci/soci-platform.h"
 #include "soci-dtocstr.h"
+#include "soci-mktime.h"
 // std
 #include <ciso646>
 #include <cstddef>
@@ -207,9 +208,11 @@ void mysql_vector_use_type_backend::pre_use(indicator const *ind)
                     std::size_t const bufSize = 80;
                     buf = new char[bufSize];
 
-                    snprintf(buf, bufSize, "\'%d-%02d-%02d %02d:%02d:%02d\'",
-                        v[i].tm_year + 1900, v[i].tm_mon + 1, v[i].tm_mday,
-                        v[i].tm_hour, v[i].tm_min, v[i].tm_sec);
+                    int n = 0;
+                    buf[n++] = '\'';
+                    n += format_std_tm(v[i], buf + n, bufSize - n - 1);
+                    buf[n++] = '\'';
+                    buf[n] = '\0';
                 }
                 break;
 

diff --git a/src/backends/postgresql/standard-use-type.cpp b/src/backends/postgresql/standard-use-type.cpp
@@ -13,6 +13,7 @@
 #include "soci/soci-platform.h"
 #include "soci-dtocstr.h"
 #include "soci-exchange-cast.h"
+#include "soci-mktime.h"
 #include <libpq/libpq-fs.h> // libpq
 #include <cctype>
 #include <cstdint>
@@ -142,10 +143,7 @@ void postgresql_standard_use_type_backend::pre_use(indicator const * ind)
                 std::size_t const bufSize = 80;
                 buf_ = new char[bufSize];
 
-                std::tm const& t = exchange_type_cast<x_stdtm>(data_);
-                snprintf(buf_, bufSize, "%d-%02d-%02d %02d:%02d:%02d",
-                    t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
-                    t.tm_hour, t.tm_min, t.tm_sec);
+                format_std_tm(exchange_type_cast<x_stdtm>(data_), buf_, bufSize);
             }
             break;
         case x_rowid:

diff --git a/src/backends/postgresql/vector-use-type.cpp b/src/backends/postgresql/vector-use-type.cpp
@@ -9,6 +9,7 @@
 #include "soci/soci-platform.h"
 #include "soci/postgresql/soci-postgresql.h"
 #include "soci-dtocstr.h"
+#include "soci-mktime.h"
 #include "common.h"
 #include "soci/type-wrappers.h"
 #include <libpq/libpq-fs.h> // libpq
@@ -218,9 +219,7 @@ void postgresql_vector_use_type_backend::pre_use(indicator const * ind)
                     std::size_t const bufSize = 80;
                     buf = new char[bufSize];
 
-                    snprintf(buf, bufSize, "%d-%02d-%02d %02d:%02d:%02d",
-                        v[i].tm_year + 1900, v[i].tm_mon + 1, v[i].tm_mday,
-                        v[i].tm_hour, v[i].tm_min, v[i].tm_sec);
+                    format_std_tm(v[i], buf, bufSize);
                 }
                 break;
             case x_xmltype:

diff --git a/src/backends/sqlite3/standard-use-type.cpp b/src/backends/sqlite3/standard-use-type.cpp
@@ -12,6 +12,7 @@
 #include "soci/blob.h"
 #include "soci-dtocstr.h"
 #include "soci-exchange-cast.h"
+#include "soci-mktime.h"
 // std
 #include <cstdio>
 #include <cstdlib>
@@ -176,12 +177,7 @@ void sqlite3_standard_use_type_backend::pre_use(indicator const * ind)
             std::tm &t = exchange_type_cast<x_stdtm>(data_);
 
             col.buffer_.data_ = new char[bufSize];
-            col.buffer_.size_
-                = snprintf(
-                    col.buffer_.data_, bufSize, "%d-%02d-%02d %02d:%02d:%02d",
-                    t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
-                    t.tm_hour, t.tm_min, t.tm_sec
-                );
+            col.buffer_.size_ = format_std_tm(t, col.buffer_.data_, bufSize);
             break;
         }
 

diff --git a/src/backends/sqlite3/vector-use-type.cpp b/src/backends/sqlite3/vector-use-type.cpp
@@ -10,6 +10,7 @@
 #include "soci/soci-platform.h"
 #include "soci/sqlite3/soci-sqlite3.h"
 #include "soci-dtocstr.h"
+#include "soci-mktime.h"
 #include "common.h"
 // std
 #include <cstdio>
@@ -176,11 +177,7 @@ void sqlite3_vector_use_type_backend::pre_use(indicator const * ind)
                 col.type_ = dt_date;
                 col.dataType_ = db_date;
                 col.buffer_.data_ = new char[bufSize];
-                col.buffer_.size_
-                    = snprintf(col.buffer_.data_, bufSize, "%d-%02d-%02d %02d:%02d:%02d",
-                        tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
-                        tm.tm_hour, tm.tm_min, tm.tm_sec
-                    );
+                col.buffer_.size_ = format_std_tm(tm, col.buffer_.data_, bufSize);
                 break;
             }
 

diff --git a/src/core/use-type.cpp b/src/core/use-type.cpp
@@ -10,6 +10,7 @@
 #include "soci/use-type.h"
 #include "soci/statement.h"
 #include "soci-exchange-cast.h"
+#include "soci-mktime.h"
 
 #include <cstdio>
 
@@ -98,9 +99,7 @@ void standard_use_type::dump_value(std::ostream& os) const
                 std::tm const& t = exchange_type_cast<x_stdtm>(data_);
 
                 char buf[80];
-                snprintf(buf, sizeof(buf), "%04d-%02d-%02d %02d:%02d:%02d",
-                              t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
-                              t.tm_hour, t.tm_min, t.tm_sec);
+                format_std_tm(t, buf, sizeof(buf));
 
                 os << buf;
             }