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authorflywind <xzsflywind@gmail.com>2021-08-13 00:21:01 +0800
committerGitHub <noreply@github.com>2021-08-12 09:21:01 -0700
commitf559319a682fb2abbf2945fd3390585a54f044d5 (patch)
treec891e6bda03e8ab20e972ec2700b3d3868d7b947 /lib
parent5c1304a4181596e764b05679cd8a0044ab3398dd (diff)
downloadNim-f559319a682fb2abbf2945fd3390585a54f044d5.tar.gz
fix a sqlite bug (#18669)
Diffstat (limited to 'lib')
-rw-r--r--lib/impure/db_sqlite.nim15
-rw-r--r--lib/std/private/dbutils.nim15
2 files changed, 19 insertions, 11 deletions
diff --git a/lib/impure/db_sqlite.nim b/lib/impure/db_sqlite.nim
index 7bd807a12..b600576df 100644
--- a/lib/impure/db_sqlite.nim
+++ b/lib/impure/db_sqlite.nim
@@ -171,7 +171,7 @@ import sqlite3, macros
 import db_common
 export db_common
 
-import std/private/since
+import std/private/[since, dbutils]
 
 type
   DbConn* = PSqlite3  ## Encapsulates a database connection.
@@ -211,14 +211,7 @@ proc dbQuote*(s: string): string =
   add(result, '\'')
 
 proc dbFormat(formatstr: SqlQuery, args: varargs[string]): string =
-  result = ""
-  var a = 0
-  for c in items(string(formatstr)):
-    if c == '?':
-      add(result, dbQuote(args[a]))
-      inc(a)
-    else:
-      add(result, c)
+  dbFormatImpl(formatstr, dbQuote, args)
 
 proc prepare*(db: DbConn; q: string): SqlPrepared {.since: (1, 3).} =
   ## Creates a new `SqlPrepared` statement.
@@ -642,7 +635,7 @@ proc getValue*(db: DbConn,  stmtName: SqlPrepared): string
 
 proc tryInsertID*(db: DbConn, query: SqlQuery,
                   args: varargs[string, `$`]): int64
-                  {.tags: [WriteDbEffect], raises: [].} =
+                  {.tags: [WriteDbEffect], raises: [DbError].} =
   ## Executes the query (typically "INSERT") and returns the
   ## generated ID for the row or -1 in case of an error.
   ##
@@ -699,7 +692,7 @@ proc insertID*(db: DbConn, query: SqlQuery,
 
 proc tryInsert*(db: DbConn, query: SqlQuery, pkName: string,
                 args: varargs[string, `$`]): int64
-               {.tags: [WriteDbEffect], raises: [], since: (1, 3).} =
+               {.tags: [WriteDbEffect], raises: [DbError], since: (1, 3).} =
   ## same as tryInsertID
   tryInsertID(db, query, args)
 
diff --git a/lib/std/private/dbutils.nim b/lib/std/private/dbutils.nim
new file mode 100644
index 000000000..0ae3b3702
--- /dev/null
+++ b/lib/std/private/dbutils.nim
@@ -0,0 +1,15 @@
+import db_common
+
+
+template dbFormatImpl*(formatstr: SqlQuery, dbQuote: proc (s: string): string, args: varargs[string]): string =
+  var res = ""
+  var a = 0
+  for c in items(string(formatstr)):
+    if c == '?':
+      if a == args.len:
+        dbError("""The number of "?" given exceeds the number of parameters present in the query.""")
+      add(res, dbQuote(args[a]))
+      inc(a)
+    else:
+      add(res, c)
+  res