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Overview
| Comment: | Enhance the edit() function so that it converts text from \r\n back into \n only if the original unedited copy contained no \r\n values. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 20c995d3f0f4de5410962172cb59da0f |
| User & Date: | drh 2018-08-06 02:08:53 |
Context
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2018-08-08
| ||
| 20:46 | Minor style improvements. check-in: 60bbca2b user: mistachkin tags: trunk | |
|
2018-08-06
| ||
| 17:12 | Allow sqlite3_snapshot_open() to be called to change the snapshot after a read transaction is already open on database. Closed-Leaf check-in: 051ac015 user: dan tags: exp-snapshot-open | |
| 02:08 | Enhance the edit() function so that it converts text from \r\n back into \n only if the original unedited copy contained no \r\n values. check-in: 20c995d3 user: drh tags: trunk | |
| 01:39 | Add the --info option to the fuzzcheck test utility. check-in: 1caaaaa7 user: drh tags: trunk | |
Changes
Changes to src/shell.c.in.
1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 .... 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 .... 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 |
){
const char *zEditor;
char *zTempFile = 0;
sqlite3 *db;
char *zCmd = 0;
int bBin;
int rc;
FILE *f = 0;
sqlite3_int64 sz;
sqlite3_int64 x;
unsigned char *p = 0;
if( argc==2 ){
zEditor = (const char*)sqlite3_value_text(argv[1]);
................................................................................
zTempFile = sqlite3_mprintf("temp%llx", r);
if( zTempFile==0 ){
sqlite3_result_error_nomem(context);
return;
}
}
bBin = sqlite3_value_type(argv[0])==SQLITE_BLOB;
f = fopen(zTempFile, bBin ? "wb" : "w");
if( f==0 ){
sqlite3_result_error(context, "edit() cannot open temp file", -1);
goto edit_func_end;
}
sz = sqlite3_value_bytes(argv[0]);
if( bBin ){
x = fwrite(sqlite3_value_blob(argv[0]), 1, sz, f);
}else{
x = fwrite(sqlite3_value_text(argv[0]), 1, sz, f);
}
fclose(f);
f = 0;
if( x!=sz ){
sqlite3_result_error(context, "edit() could not write the whole file", -1);
goto edit_func_end;
................................................................................
}
rc = system(zCmd);
sqlite3_free(zCmd);
if( rc ){
sqlite3_result_error(context, "EDITOR returned non-zero", -1);
goto edit_func_end;
}
f = fopen(zTempFile, bBin ? "rb" : "r");
if( f==0 ){
sqlite3_result_error(context,
"edit() cannot reopen temp file after edit", -1);
goto edit_func_end;
}
fseek(f, 0, SEEK_END);
sz = ftell(f);
rewind(f);
p = sqlite3_malloc64( sz+(bBin==0) );
if( p==0 ){
sqlite3_result_error_nomem(context);
goto edit_func_end;
}
if( bBin ){
x = fread(p, 1, sz, f);
}else{
x = fread(p, 1, sz, f);
p[sz] = 0;
}
fclose(f);
f = 0;
if( x!=sz ){
sqlite3_result_error(context, "could not read back the whole file", -1);
goto edit_func_end;
}
if( bBin ){
sqlite3_result_blob64(context, p, sz, sqlite3_free);
}else{
sqlite3_result_text64(context, (const char*)p, sz,
sqlite3_free, SQLITE_UTF8);
}
p = 0;
edit_func_end:
if( f ) fclose(f);
|
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){
const char *zEditor;
char *zTempFile = 0;
sqlite3 *db;
char *zCmd = 0;
int bBin;
int rc;
int hasCRNL = 0;
FILE *f = 0;
sqlite3_int64 sz;
sqlite3_int64 x;
unsigned char *p = 0;
if( argc==2 ){
zEditor = (const char*)sqlite3_value_text(argv[1]);
................................................................................
zTempFile = sqlite3_mprintf("temp%llx", r);
if( zTempFile==0 ){
sqlite3_result_error_nomem(context);
return;
}
}
bBin = sqlite3_value_type(argv[0])==SQLITE_BLOB;
/* When writing the file to be edited, do \n to \r\n conversions on systems
** that want \r\n line endings */
f = fopen(zTempFile, bBin ? "wb" : "w");
if( f==0 ){
sqlite3_result_error(context, "edit() cannot open temp file", -1);
goto edit_func_end;
}
sz = sqlite3_value_bytes(argv[0]);
if( bBin ){
x = fwrite(sqlite3_value_blob(argv[0]), 1, sz, f);
}else{
const char *z = (const char*)sqlite3_value_text(argv[0]);
/* Remember whether or not the value originally contained \r\n */
if( z && strstr(z,"\r\n")!=0 ) hasCRNL = 1;
x = fwrite(sqlite3_value_text(argv[0]), 1, sz, f);
}
fclose(f);
f = 0;
if( x!=sz ){
sqlite3_result_error(context, "edit() could not write the whole file", -1);
goto edit_func_end;
................................................................................
}
rc = system(zCmd);
sqlite3_free(zCmd);
if( rc ){
sqlite3_result_error(context, "EDITOR returned non-zero", -1);
goto edit_func_end;
}
f = fopen(zTempFile, "rb");
if( f==0 ){
sqlite3_result_error(context,
"edit() cannot reopen temp file after edit", -1);
goto edit_func_end;
}
fseek(f, 0, SEEK_END);
sz = ftell(f);
rewind(f);
p = sqlite3_malloc64( sz+(bBin==0) );
if( p==0 ){
sqlite3_result_error_nomem(context);
goto edit_func_end;
}
x = fread(p, 1, sz, f);
fclose(f);
f = 0;
if( x!=sz ){
sqlite3_result_error(context, "could not read back the whole file", -1);
goto edit_func_end;
}
if( bBin ){
sqlite3_result_blob64(context, p, sz, sqlite3_free);
}else{
int i, j;
if( hasCRNL ){
/* If the original contains \r\n then do no conversions back to \n */
j = sz;
}else{
/* If the file did not originally contain \r\n then convert any new
** \r\n back into \n */
for(i=j=0; i<sz; i++){
if( p[i]=='\r' && p[i+1]=='\n' ) i++;
p[j++] = p[i];
}
sz = j;
p[sz] = 0;
}
sqlite3_result_text64(context, (const char*)p, sz,
sqlite3_free, SQLITE_UTF8);
}
p = 0;
edit_func_end:
if( f ) fclose(f);
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