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[lib] now command line supports pairs of "" where users can define a long string with spaces inside

This commit is contained in:
tangxifan 2023-01-01 11:56:58 -08:00
parent 76570e653c
commit faff254808
1 changed files with 38 additions and 2 deletions
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40
libs/libopenfpgashell/src/shell.tpp
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@ -486,9 +486,45 @@ void Shell<T>::exit(const int& init_err) const {
template <class T>
int Shell<T>::execute_command(const char* cmd_line,
T& common_context) {
/* Tokenize the line */
openfpga::StringToken tokenizer(cmd_line);
std::vector<std::string> tokens = tokenizer.split(" ");
/* Do not split the string in each quote "", as they should be a piece */
std::vector<size_t> quote_anchors;
size_t quote_found = tokenizer.data().find("\"");
while (std::string::npos != quote_found) {
quote_anchors.push_back(quote_found);
quote_found = tokenizer.data().find("\"", quote_found+1);
}
/* Quote should be not be started with! */
if (!quote_anchors.empty() && quote_anchors.front() == 0) {
VTR_LOG("Quotes (\") should NOT be the first charactor in command line: '%s'\n", cmd_line);
return CMD_EXEC_FATAL_ERROR;
}
/* Quotes must be in pairs! */
if (0 != quote_anchors.size() % 2) {
VTR_LOG("Quotes (\") are not in pair in command line: '%s'\n", cmd_line);
return CMD_EXEC_FATAL_ERROR;
}
/* Tokenize the line based on anchors */
std::vector<std::string> tokens;
if (quote_anchors.empty()) {
tokens = tokenizer.split(" ");
} else {
/* There are pairs of quotes, identify the chunk which should be split*/
std::vector<std::string> token_chunks = tokenizer.split("\"");
for (size_t ichunk = 0; ichunk < token_chunks.size(); ichunk++) {
/* Chunk with even index (including the first) is always out of two quote -> Split!
* Chunk with odd index is always between two quotes -> Do not split!
*/
if (ichunk % 2 == 0) {
openfpga::StringToken chunk_tokenizer(token_chunks[ichunk]);
for (std::string curr_token : chunk_tokenizer.split(" ")) {
tokens.push_back(curr_token);
}
} else {
tokens.push_back(token_chunks[ichunk]);
}
}
}
/* Find if the command name is valid */
ShellCommandId cmd_id = command(tokens[0]);