Patched csv module for sqlite ('\t' as field separator)

sqlite-csvtab.sh

#!/bin/bash
wget -O csv.c https://www.sqlite.org/src/raw/ext/misc/csv.c?name=531a46cbad789fca0aa9db69a0e6c8ac9e68767d

PATCH_FILE=$(mktemp)

cat << EOF > $PATCH_FILE
--- csv.c       2016-11-17 18:41:12.567483787 +0000
+++ csv-patched.c       2016-11-17 18:41:03.931517320 +0000
@@ -226,7 +226,7 @@
             continue;
           }
         }
-        if( (c==',' && pc=='"')
+        if( (c=='\t' && pc=='"')
          || (c=='\n' && pc=='"')
          || (c=='\n' && pc=='\r' && ppc=='"')
          || (c==EOF && pc=='"')
@@ -251,7 +251,7 @@
       pc = c;
     }
   }else{
-    while( c>',' || (c!=EOF && c!=',' && c!='\n') ){
+    while( c>',' || (c!=EOF && c!='\t' && c!='\n') ){
       if( csv_append(p, (char)c) ) return 0;
       c = csv_getc(p);
     }
@@ -528,7 +528,7 @@
       const char *z = csv_read_one_field(&sRdr);
       if( z==0 ) goto csvtab_connect_oom;
       pNew->nCol++;
-    }while( sRdr.cTerm==',' );
+    }while( sRdr.cTerm=='\t' );
   }
   pNew->zFilename = CSV_FILENAME;  CSV_FILENAME = 0;
   pNew->zData = CSV_DATA;          CSV_DATA = 0;
@@ -661,7 +661,7 @@
       memcpy(pCur->azVal[i], z, pCur->rdr.n+1);
       i++;
     }
-  }while( pCur->rdr.cTerm==',' );
+  }while( pCur->rdr.cTerm=='\t' );
   while( i<pTab->nCol ){
     sqlite3_free(pCur->azVal[i]);
     pCur->azVal[i] = 0;
EOF

patch csv.c $PATCH_FILE
gcc -g -fPIC -shared csv.c -o csv.so