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InputText: sanity checks to e.g. detect non zero-terminated buffers + removed a redundant strlen() call during activation.

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ocornut 2024-12-19 15:10:44 +01:00
parent ae839620b9
commit 9b0e61aaaa
2 changed files with 6 additions and 1 deletions
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5
imgui_widgets.cpp
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@ -4389,6 +4389,7 @@ void ImGui::InputTextDeactivateHook(ImGuiID id)
else
{
IM_ASSERT(state->TextA.Data != 0);
IM_ASSERT(state->TextA[state->TextLen] == 0);
g.InputTextDeactivatedState.TextA.resize(state->TextLen + 1);
memcpy(g.InputTextDeactivatedState.TextA.Data, state->TextA.Data, state->TextLen + 1);
}
@ -4519,6 +4520,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
if (init_reload_from_user_buf)
{
int new_len = (int)strlen(buf);
IM_ASSERT(new_len + 1 <= buf_size && "Is your input buffer properly zero-terminated?");
state->WantReloadUserBuf = false;
InputTextReconcileUndoState(state, state->TextA.Data, state->TextLen, buf, new_len);
state->TextA.resize(buf_size + 1); // we use +1 to make sure that .Data is always pointing to at least an empty string.
@ -4540,6 +4542,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
// Take a copy of the initial buffer value.
// From the moment we focused we are normally ignoring the content of 'buf' (unless we are in read-only mode)
const int buf_len = (int)strlen(buf);
IM_ASSERT(buf_len + 1 <= buf_size && "Is your input buffer properly zero-terminated?");
state->TextToRevertTo.resize(buf_len + 1); // UTF-8. we use +1 to make sure that .Data is always pointing to at least an empty string.
memcpy(state->TextToRevertTo.Data, buf, buf_len + 1);
@ -4551,7 +4554,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
// Start edition
state->ID = id;
state->TextLen = (int)strlen(buf);
state->TextLen = buf_len;
if (!is_readonly)
{
state->TextA.resize(buf_size + 1); // we use +1 to make sure that .Data is always pointing to at least an empty string.