feat add StrSpilt,Trim,TrimLeft,TrimRight

include/sled/strings/utils.h

@@ -1,6 +1,8 @@
+#pragma once
 #ifndef SLED_STRINGS_UTILS_H
 #define SLED_STRINGS_UTILS_H
 #include <string>
+#include <vector>
 
 namespace sled {
 
@@ -10,6 +12,14 @@ std::string ToHex(const std::string &str);
 std::string StrJoin(const std::vector<std::string> &strings,
                     const std::string &delim,
                     bool skip_empty = false);
+std::vector<std::string> StrSplit(const std::string &str,
+                                  const std::string &delim,
+                                  bool skip_empty = false);
+std::string Trim(const std::string &str, const std::string &chars = " \t\n\r");
+std::string TrimLeft(const std::string &str,
+                     const std::string &chars = " \t\n\r");
+std::string TrimRight(const std::string &str,
+                      const std::string &chars = " \t\n\r");
 
 }// namespace sled
 #endif//   SLED_STRINGS_UTILS_H

src/strings/utils.cc

@@ -20,4 +20,49 @@ StrJoin(const std::vector<std::string> &strings,
     }
     return ss.str();
 }
+
+std::vector<std::string>
+StrSplit(const std::string &str, const std::string &delim, bool skip_empty)
+{
+    std::vector<std::string> result;
+    if (str.empty()) { return result; }
+
+    size_t start = 0;
+    size_t next_pos = str.find_first_of(delim, start);
+    while (next_pos != std::string::npos) {
+        if (!skip_empty || next_pos > start) {
+            result.emplace_back(str.substr(start, next_pos - start));
+        }
+        start = next_pos + 1;
+        next_pos = str.find_first_of(delim, start);
+    }
+
+    if (start < str.size()) { result.emplace_back(str.substr(start)); }
+    return result;
+}
+
+std::string
+Trim(const std::string &str, const std::string &chars)
+{
+    return TrimLeft(TrimRight(str));
+}
+
+std::string
+TrimLeft(const std::string &str, const std::string &chars)
+{
+    size_t start = 0;
+    while (start < str.size() && chars.find(str[start]) != std::string::npos) {
+        ++start;
+    }
+    return str.substr(start);
+}
+
+std::string
+TrimRight(const std::string &str, const std::string &chars)
+{
+    size_t end = str.size();
+    while (end > 0 && chars.find(str[end - 1]) != std::string::npos) { --end; }
+    return str.substr(0, end);
+}
+
 }// namespace sled