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#include <stdio.h>
#include <stdlib.h>
#include <sqlite3.h>
#include <errno.h>
#include <limits.h>
#include <zsv.h>
#include <zsv/utils/writer.h>
#include <zsv/utils/dirs.h>
#include <zsv/utils/file.h>
#include <zsv/utils/os.h>
#include <zsv/utils/overwrite.h>
#include <zsv/utils/overwrite_writer.h>
static enum zsv_status zsv_overwrite_writer_init(struct zsv_overwrite *data) {
enum zsv_status err = zsv_status_ok;
int tmp_err = 0;
if (zsv_mkdirs(data->ctx->src, 1) && !zsv_file_readable(data->ctx->src, &tmp_err, NULL)) {
err = zsv_status_error;
perror(data->ctx->src);
return err;
}
sqlite3_stmt *query = NULL;
if (sqlite3_open_v2(data->ctx->src, &data->ctx->sqlite3.db, SQLITE_OPEN_READONLY, NULL) != SQLITE_OK ||
data->mode == zsvsheet_mode_add || data->mode == zsvsheet_mode_bulk || data->mode == zsvsheet_mode_remove ||
data->mode == zsvsheet_mode_clear) {
sqlite3_close(data->ctx->sqlite3.db);
if (sqlite3_open_v2(data->ctx->src, &data->ctx->sqlite3.db, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL) !=
SQLITE_OK) {
err = zsv_status_error;
fprintf(stderr, "Failed to open conn: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
return err;
}
if (sqlite3_exec(data->ctx->sqlite3.db, "PRAGMA foreign_keys = on", NULL, NULL, NULL) != SQLITE_OK) {
err = zsv_status_error;
fprintf(stderr, "Could not enable foreign keys: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
return err;
}
if (sqlite3_prepare_v2(data->ctx->sqlite3.db,
"CREATE TABLE IF NOT EXISTS overwrites ( row integer, column integer, value string, "
"timestamp varchar(25), author varchar(25) );",
-1, &query, NULL) == SQLITE_OK) {
if (sqlite3_step(query) != SQLITE_DONE) {
err = zsv_status_error;
fprintf(stderr, "Failed to step: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
return err;
}
} else {
err = zsv_status_error;
fprintf(stderr, "Failed to prepare1: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
}
if (query)
sqlite3_finalize(query);
if (sqlite3_prepare_v2(data->ctx->sqlite3.db, "CREATE UNIQUE INDEX overwrites_uix ON overwrites (row, column)", -1,
&query, NULL) == SQLITE_OK) {
if (sqlite3_step(query) != SQLITE_DONE) {
err = zsv_status_error;
fprintf(stderr, "Failed to step: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
return err;
}
if (query)
sqlite3_finalize(query);
}
}
if (!data->ctx->sqlite3.db)
err = zsv_status_error;
return err;
}
struct zsv_overwrite *zsv_overwrite_writer_new(struct zsv_overwrite_args *args, struct zsv_overwrite_opts *ctx_opts) {
struct zsv_overwrite *data = calloc(1, sizeof(*data));
data->overwrite = calloc(1, sizeof(*data->overwrite));
data->overwrite->old_value = args->overwrite->old_value;
data->force = args->force;
data->all = args->all;
data->a1 = args->a1;
data->bulk_file = args->bulk_file;
data->mode = args->mode;
data->ctx = zsv_overwrite_context_new(ctx_opts);
data->overwrite = args->overwrite;
data->next = args->next;
struct zsv_csv_writer_options writer_opts = {0};
data->writer = zsv_writer_new(&writer_opts);
enum zsv_status err = zsv_status_ok;
if (data->mode == zsvsheet_mode_list) {
if ((err = (zsv_overwrite_open(data->ctx)))) // use open when it's read-only
fprintf(stderr, "Failed to initalize database\n");
} else {
if ((err = zsv_overwrite_writer_init(data))) // use init when writing to db
fprintf(stderr, "Failed to initalize database\n");
}
return err == zsv_status_ok ? data : NULL;
}
void zsv_overwrite_writer_delete(struct zsv_overwrite *data) {
if (data->writer)
zsv_writer_delete(data->writer);
if (data->ctx)
zsv_overwrite_context_delete(data->ctx);
if (data->overwrite && data->mode != zsvsheet_mode_bulk)
free(data->overwrite->val.str);
if (data->all)
zsv_remove(data->ctx->src);
free(data);
}
enum zsv_status zsv_overwrite_writer_add(struct zsv_overwrite *data) {
if (!data->overwrite->val.str)
return zsv_status_error;
if (data->force)
data->ctx->sqlite3.sql =
"INSERT OR REPLACE INTO overwrites (row, column, value, timestamp, author) VALUES (?, ?, ?, ?, ?)";
else if (data->overwrite->old_value.len > 0)
data->ctx->sqlite3.sql = "INSERT OR REPLACE INTO overwrites (row, column, value, timestamp, author) SELECT ?, ?, "
"?, ?, ? WHERE EXISTS (SELECT 1 FROM overwrites WHERE value = ?)";
else
data->ctx->sqlite3.sql = "INSERT INTO overwrites (row, column, value, timestamp, author) VALUES (?, ?, ?, ?, ?)";
enum zsv_status err = zsv_status_ok;
sqlite3_stmt *query = NULL;
if (sqlite3_prepare_v2(data->ctx->sqlite3.db, data->ctx->sqlite3.sql, -1, &query, NULL) == SQLITE_OK) {
sqlite3_bind_int64(query, 1, data->overwrite->row_ix);
sqlite3_bind_int64(query, 2, data->overwrite->col_ix);
sqlite3_bind_text(query, 3, (const char *)data->overwrite->val.str, data->overwrite->val.len, SQLITE_STATIC);
if (data->overwrite->timestamp)
sqlite3_bind_int64(query, 4, data->overwrite->timestamp);
else
sqlite3_bind_null(query, 4);
if (data->overwrite->author.len > 0)
sqlite3_bind_text(query, 5, (const char *)data->overwrite->author.str, data->overwrite->author.len,
SQLITE_STATIC);
else
sqlite3_bind_text(query, 5, "", -1, SQLITE_STATIC);
if (data->overwrite->old_value.len > 0)
sqlite3_bind_text(query, 6, (const char *)data->overwrite->old_value.str, data->overwrite->old_value.len,
SQLITE_STATIC);
if (sqlite3_step(query) != SQLITE_DONE) {
err = zsv_status_error;
if (data->mode == zsvsheet_mode_bulk)
sqlite3_exec(data->ctx->sqlite3.db, "ROLLBACK", NULL, NULL, NULL);
fprintf(stderr, "Value already exists at row %zu and column %zu, use --force to force insert\n",
data->overwrite->row_ix, data->overwrite->col_ix);
}
} else {
err = zsv_status_error;
if (data->mode == zsvsheet_mode_bulk)
sqlite3_exec(data->ctx->sqlite3.db, "ROLLBACK", NULL, NULL, NULL);
fprintf(stderr, "Failed to prepare2: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
}
if (query)
sqlite3_finalize(query);
return err;
}
enum zsv_status zsv_overwrite_writer_remove(struct zsv_overwrite *data) {
enum zsv_status err = zsv_status_ok;
if (data->all) {
err = zsv_overwrite_writer_clear(data);
return err;
}
data->ctx->sqlite3.sql = data->overwrite->old_value.len > 0
? "DELETE FROM overwrites WHERE row = ? AND column = ? AND value = ?"
: "DELETE FROM overwrites WHERE row = ? AND column = ?";
sqlite3_stmt *query = NULL;
if (sqlite3_prepare_v2(data->ctx->sqlite3.db, data->ctx->sqlite3.sql, -1, &query, NULL) != SQLITE_OK) {
err = zsv_status_error;
if (data->mode == zsvsheet_mode_bulk)
sqlite3_exec(data->ctx->sqlite3.db, "ROLLBACK", NULL, NULL, NULL);
fprintf(stderr, "Could not prepare: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
return err;
}
sqlite3_bind_int64(query, 1, data->overwrite->row_ix);
sqlite3_bind_int64(query, 2, data->overwrite->col_ix);
if (data->overwrite->old_value.len > 0)
sqlite3_bind_text(query, 3, (const char *)data->overwrite->old_value.str, data->overwrite->old_value.len,
SQLITE_STATIC);
if (sqlite3_step(query) != SQLITE_DONE) {
err = zsv_status_error;
if (data->mode == zsvsheet_mode_bulk)
sqlite3_exec(data->ctx->sqlite3.db, "ROLLBACK", NULL, NULL, NULL);
fprintf(stderr, "Could not step: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
return err;
}
if (query)
sqlite3_finalize(query);
return err;
}
enum zsv_status zsv_overwrite_writer_bulk(struct zsv_overwrite *data) {
free(data->ctx->src);
data->ctx->src = (char *)data->bulk_file;
if (zsv_overwrite_open(data->ctx) != zsv_status_ok) {
fprintf(stderr, "Could not open\n");
return zsv_status_error;
}
data->overwrite->have = 1;
data->ctx->row_ix = 1;
if (sqlite3_exec(data->ctx->sqlite3.db, "BEGIN TRANSACTION", NULL, NULL, NULL) == SQLITE_OK) {
while (data->ctx->next(data->ctx, data->overwrite) == zsv_status_ok && data->overwrite->have) {
data->next(data);
data->overwrite->timestamp = 0;
}
if (sqlite3_exec(data->ctx->sqlite3.db, "COMMIT", NULL, NULL, NULL) != SQLITE_OK)
fprintf(stderr, "Could not commit changes: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
} else
fprintf(stderr, "Could not begin transaction: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
return zsv_status_ok;
}
enum zsv_status zsv_overwrite_writer_clear(struct zsv_overwrite *data) {
enum zsv_status err = zsv_status_ok;
sqlite3_stmt *query = NULL;
if (sqlite3_prepare_v2(data->ctx->sqlite3.db, "DELETE FROM overwrites", -1, &query, NULL) == SQLITE_OK) {
if (sqlite3_step(query) != SQLITE_DONE) {
err = zsv_status_error;
fprintf(stderr, "Failed to step: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
return err;
}
} else {
err = zsv_status_error;
fprintf(stderr, "Could not prepare: %s\n", sqlite3_errmsg(data->ctx->sqlite3.db));
}
if (query)
sqlite3_finalize(query);
return err;
}
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