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authorrubidium42 <rubidium@openttd.org>2021-05-30 11:20:00 +0200
committerrubidium42 <rubidium42@users.noreply.github.com>2021-06-13 10:26:58 +0200
commitfed3e3305f6437a0d3ccf231585595838369b907 (patch)
tree2da623bc724b386e7cb363f646b868c8c5a7f8d8 /src
parent2d0abf5a7643afb2b37ca8902d13f1df5c14f5ee (diff)
downloadopenttd-fed3e3305f6437a0d3ccf231585595838369b907.tar.xz
Codechange: add function to determine whether are string starts or ends with a given other string
Diffstat (limited to 'src')
-rw-r--r--src/string.cpp27
-rw-r--r--src/string_func.h3
2 files changed, 30 insertions, 0 deletions
diff --git a/src/string.cpp b/src/string.cpp
index e9a619c40..fbb447ee9 100644
--- a/src/string.cpp
+++ b/src/string.cpp
@@ -358,6 +358,33 @@ void StrTrimInPlace(std::string &str)
StrRightTrimInPlace(str);
}
+/**
+ * Check whether the given string starts with the given prefix.
+ * @param str The string to look at.
+ * @param prefix The prefix to look for.
+ * @return True iff the begin of the string is the same as the prefix.
+ */
+bool StrStartsWith(const std::string_view str, const std::string_view prefix)
+{
+ size_t prefix_len = prefix.size();
+ if (str.size() < prefix_len) return false;
+ return str.compare(0, prefix_len, prefix, 0, prefix_len) == 0;
+}
+
+/**
+ * Check whether the given string ends with the given suffix.
+ * @param str The string to look at.
+ * @param suffix The suffix to look for.
+ * @return True iff the end of the string is the same as the suffix.
+ */
+bool StrEndsWith(const std::string_view str, const std::string_view suffix)
+{
+ size_t suffix_len = suffix.size();
+ if (str.size() < suffix_len) return false;
+ return str.compare(str.size() - suffix_len, suffix_len, suffix, 0, suffix_len) == 0;
+}
+
+
/** Scans the string for colour codes and strips them */
void str_strip_colours(char *str)
{
diff --git a/src/string_func.h b/src/string_func.h
index 2e258fbd2..0cbf26d6b 100644
--- a/src/string_func.h
+++ b/src/string_func.h
@@ -51,6 +51,9 @@ bool strtolower(std::string &str, std::string::size_type offs = 0);
bool StrValid(const char *str, const char *last) NOACCESS(2);
void StrTrimInPlace(std::string &str);
+bool StrStartsWith(const std::string_view str, const std::string_view prefix);
+bool StrEndsWith(const std::string_view str, const std::string_view suffix);
+
/**
* Check if a string buffer is empty.
*