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74 lines
1.4 KiB
74 lines
1.4 KiB
use crate::{
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opt::{Opt, Options},
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};
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pub enum OperationMode {
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Version(bool),
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Normal(Options, Vec<String>),
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Help,
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}
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pub fn parse() -> Result<OperationMode, &'static str>
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{
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let mut opt = Options::new();
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let mut files = Vec::new();
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let mut look = true;
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let args: Vec<String> = std::env::args().collect();
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let mut i=1;
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while i < args.len()
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{
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let arg = &args[i];
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match arg.as_str() {
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"-h" if i == 1 => {
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return Ok(OperationMode::Help);
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},
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"-v" if i==1 => {
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return Ok(OperationMode::Version(false));
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},
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"-V" if i==1 => {
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return Ok(OperationMode::Version(true));
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},
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"-s" if look => {
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opt |= Opt::Silent;
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},
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"-e" if look => {
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if i < args.len() - 1 {
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opt |= Opt::Execute(args[i+1].to_owned());
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} else {
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return Err("-e expects an argument that wasn't given.");
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}
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i += 1;
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},
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"-o" if look => {
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if i < args.len() - 1 {
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opt |= Opt::Output(args[i+1].to_owned());
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} else {
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return Err("-o expects an argument that wasn't given.");
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}
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i += 1;
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},
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"-u" if look => {
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opt |= Opt::NoHash;
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},
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"-" if look => look=false,
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other => {
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files.push(other.to_owned());
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look=false;
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},
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}
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i += 1;
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}
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if files.len() < 1 {
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return Err("No files specified. For help run with `-h`");
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}
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Ok(OperationMode::Normal(opt, files))
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}
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pub fn program_name() -> String
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{
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std::env::args().next().unwrap()
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}
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