diff options
Diffstat (limited to 'compat/mingw.c')
| -rw-r--r-- | compat/mingw.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/compat/mingw.c b/compat/mingw.c index 9421a37..e8e2028 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -2,6 +2,7 @@ #include "win32.h" #include <conio.h> #include "../strbuf.h" +#include "../run-command.h" static const int delay[] = { 0, 1, 10, 20, 40 }; @@ -129,6 +130,74 @@ static inline int is_file_in_use_error(DWORD errcode) return 0; } +static int read_yes_no_answer(void) +{ + char answer[1024]; + + if (fgets(answer, sizeof(answer), stdin)) { + size_t answer_len = strlen(answer); + int got_full_line = 0, c; + + /* remove the newline */ + if (answer_len >= 2 && answer[answer_len-2] == '\r') { + answer[answer_len-2] = '\0'; + got_full_line = 1; + } else if (answer_len >= 1 && answer[answer_len-1] == '\n') { + answer[answer_len-1] = '\0'; + got_full_line = 1; + } + /* flush the buffer in case we did not get the full line */ + if (!got_full_line) + while ((c = getchar()) != EOF && c != '\n') + ; + } else + /* we could not read, return the + * default answer which is no */ + return 0; + + if (tolower(answer[0]) == 'y' && !answer[1]) + return 1; + if (!strncasecmp(answer, "yes", sizeof(answer))) + return 1; + if (tolower(answer[0]) == 'n' && !answer[1]) + return 0; + if (!strncasecmp(answer, "no", sizeof(answer))) + return 0; + + /* did not find an answer we understand */ + return -1; +} + +static int ask_yes_no_if_possible(const char *format, ...) +{ + char question[4096]; + const char *retry_hook[] = { NULL, NULL, NULL }; + va_list args; + + va_start(args, format); + vsnprintf(question, sizeof(question), format, args); + va_end(args); + + if ((retry_hook[0] = getenv("GIT_ASK_YESNO"))) { + retry_hook[1] = question; + return !run_command_v_opt(retry_hook, 0); + } + + if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr))) + return 0; + + while (1) { + int answer; + fprintf(stderr, "%s (y/n) ", question); + + if ((answer = read_yes_no_answer()) >= 0) + return answer; + + fprintf(stderr, "Sorry, I did not understand your answer. " + "Please type 'y' or 'n'\n"); + } +} + #undef unlink int mingw_unlink(const char *pathname) { @@ -149,6 +218,10 @@ int mingw_unlink(const char *pathname) Sleep(delay[tries]); tries++; } + while (ret == -1 && is_file_in_use_error(GetLastError()) && + ask_yes_no_if_possible("Unlink of file '%s' failed. " + "Should I try again?", pathname)) + ret = unlink(pathname); return ret; } @@ -1326,6 +1399,11 @@ repeat: tries++; goto repeat; } + if (gle == ERROR_ACCESS_DENIED && + ask_yes_no_if_possible("Rename from '%s' to '%s' failed. " + "Should I try again?", pold, pnew)) + goto repeat; + errno = EACCES; return -1; } |