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// Copyright (c) 2022 Teddy Wing
//
// This file is part of Yaqlite.
//
// Yaqlite is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Yaqlite is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Yaqlite. If not, see <https://www.gnu.org/licenses/>.
use clap::Parser;
use rusqlite;
use yaml_rust::yaml;
#[derive(clap::Parser, Debug)]
#[clap(version)]
struct Args {
#[clap(subcommand)]
command: Command,
}
#[derive(clap::Subcommand, Debug)]
enum Command {
Insert {
#[clap(long)]
database: String,
table_name: String,
input_file: Option<String>,
},
Select {
#[clap(long)]
database: String,
table_name: String,
#[clap(long)]
primary_key: Option<String>,
record_id: String,
#[clap(long)]
exclude_column: Option<Vec<String>>,
#[clap(long)]
include_primary_key: bool,
},
}
fn main() {
match run() {
Ok(_) => (),
Err(e) => {
eprint!("error");
for cause in e.chain() {
eprint!(": {}", cause);
}
eprintln!();
std::process::exit(exitcode::SOFTWARE);
}
}
}
fn run() -> anyhow::Result<()> {
use anyhow::Context;
let args = Args::parse();
match args.command {
Command::Insert {
database,
table_name,
input_file,
} => {
let input_file = match &input_file {
Some(f) => f,
None => "-",
};
let mut dbconn = rusqlite::Connection::open(&database)
.with_context(||
format!("can't connect to database '{}'", database)
)?;
let mut text_data;
if input_file == "-" {
use std::io::Read;
text_data = String::new();
std::io::stdin().read_to_string(&mut text_data)
.context("can't read from stdin")?;
} else {
text_data = std::fs::read_to_string(input_file)
.with_context(||
format!("can't read from file '{}'", input_file),
)?;
}
let mut yaml_data = yaml::YamlLoader::load_from_str(&text_data)
.context("can't parse YAML")?;
yaqlite::insert(&mut dbconn, &table_name, &mut yaml_data)
.context("failed to insert data")?;
dbconn.close()
.map_err(|e| {
let (_, err) = e;
err
})
.context("failed to close database")?;
},
Command::Select {
database,
table_name,
primary_key,
record_id,
mut exclude_column,
include_primary_key,
} => {
if exclude_column.is_none() && include_primary_key {
exclude_column = Some(Vec::new());
}
let dbconn = rusqlite::Connection::open(&database)
.with_context(||
format!("can't connect to database '{}'", database)
)?;
let yaml_data = match primary_key {
Some(pk) => yaqlite::select_by_column(
&dbconn,
&table_name,
&pk,
&record_id,
exclude_column.as_deref(),
).with_context(||
format!("can't select record '{}'", record_id),
)?,
None => yaqlite::select(
&dbconn,
&table_name,
&record_id,
exclude_column.as_deref(),
).with_context(||
format!("can't select record '{}'", record_id),
)?,
};
let stdout = std::io::stdout();
let mut stdout_handle = stdout.lock();
let mut buffer = yaqlite::yaml::IoAdapter::new(&mut stdout_handle);
let mut emitter = yaml_rust::YamlEmitter::new(&mut buffer);
emitter.multiline_strings(true);
emitter.dump(&yaml_data)
.context("can't serialize YAML")?;
// YamlEmitter doesn't output a trailing newline.
{
use std::io::Write;
writeln!(stdout_handle, "")
.context("failed to write to stdout")?;
}
dbconn.close()
.map_err(|e| {
let (_, err) = e;
err
})
.context("failed to close database")?;
},
};
Ok(())
}
|
