Reorganize crates based on program

Author: mvines

program/README.md

@@ -0,0 +1,7 @@
+# Memo Program
+
+A simple program that validates a string of UTF-8 encoded characters.  It can be
+used to record a string on-chain, stored in the instruction data of a successful
+transaction.
+
+Full documentation is available at https://spl.solana.com

program/src/Cargo.toml

@@ -0,0 +1,24 @@
+
+# Note: This crate must be built using do.sh
+
+[package]
+name = "spl-memo"
+version = "1.0.7"
+description = "Solana Program Library Memo"
+authors = ["Solana Maintainers <[email protected]>"]
+repository = "https://github.com/solana-labs/solana-program-library"
+license = "Apache-2.0"
+edition = "2018"
+
+[features]
+no-entrypoint = []
+skip-no-mangle = ["solana-sdk/skip-no-mangle"]
+program = ["solana-sdk/program"]
+default = ["solana-sdk/default"]
+
+[dependencies]
+solana-sdk = { version = "1.2.17", default-features = false, optional = true }
+
+[lib]
+name = "spl_memo"
+crate-type = ["cdylib", "lib"]

program/src/entrypoint.rs

@@ -0,0 +1,50 @@
+//! Program entrypoint definitions
+
+#![cfg(feature = "program")]
+#![cfg(not(feature = "no-entrypoint"))]
+
+use solana_sdk::{
+    account_info::AccountInfo, entrypoint, entrypoint::ProgramResult, program_error::ProgramError,
+    pubkey::Pubkey,
+};
+use std::str::from_utf8;
+
+entrypoint!(process_instruction);
+fn process_instruction<'a>(
+    _program_id: &Pubkey,
+    _accounts: &'a [AccountInfo<'a>],
+    instruction_data: &[u8],
+) -> ProgramResult {
+    from_utf8(instruction_data).map_err(|_| ProgramError::InvalidInstructionData)?;
+    Ok(())
+}
+
+// Pull in syscall stubs when building for non-BPF targets
+#[cfg(not(target_arch = "bpf"))]
+solana_sdk::program_stubs!();
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use solana_sdk::{program_error::ProgramError, pubkey::Pubkey};
+
+    #[test]
+    fn test_utf8_memo() {
+        let program_id = Pubkey::new(&[0; 32]);
+
+        let string = b"letters and such";
+        assert_eq!(Ok(()), process_instruction(&program_id, &[], string));
+
+        let emoji = "🐆".as_bytes();
+        let bytes = [0xF0, 0x9F, 0x90, 0x86];
+        assert_eq!(emoji, bytes);
+        assert_eq!(Ok(()), process_instruction(&program_id, &[], &emoji));
+
+        let mut bad_utf8 = bytes;
+        bad_utf8[3] = 0xFF; // Invalid UTF-8 byte
+        assert_eq!(
+            Err(ProgramError::InvalidInstructionData),
+            process_instruction(&program_id, &[], &bad_utf8)
+        );
+    }
+}

program/src/lib.rs

@@ -0,0 +1,11 @@
+#![deny(missing_docs)]
+
+//! A simple program that accepts a string of encoded characters and verifies that it parses. Currently handles UTF-8.
+
+pub mod entrypoint;
+
+// Export current solana-sdk types for downstream users who may also be building with a different
+// solana-sdk version
+pub use solana_sdk;
+
+solana_sdk::declare_id!("Memo1UhkJRfHyvLMcVucJwxXeuD728EqVDDwQDxFMNo");