Merge branch 'jc/lt-ref2-with-lt-refs' into jc/ref-locking

[git.git] / quote.c

diff --git a/quote.c b/quote.c
index 76eb14426581f03d0b15ee4eb720456a0729d1bc..ee7d62c751272f511d46894e5c5cd32e4403c721 100644 (file)
--- a/quote.c
+++ b/quote.c
@@ -13,7 +13,7 @@
  *  a!b      ==> a'\!'b    ==> 'a'\!'b'
  */
 #undef EMIT
-#define EMIT(x) ( (++len < n) && (*bp++ = (x)) )
+#define EMIT(x) do { if (++len < n) *bp++ = (x); } while(0)
 
 static inline int need_bs_quote(char c)
 {
@@ -45,6 +45,23 @@ size_t sq_quote_buf(char *dst, size_t n, const char *src)
        return len;
 }
 
+void sq_quote_print(FILE *stream, const char *src)
+{
+       char c;
+
+       fputc('\'', stream);
+       while ((c = *src++)) {
+               if (need_bs_quote(c)) {
+                       fputs("'\\", stream);
+                       fputc(c, stream);
+                       fputc('\'', stream);
+               } else {
+                       fputc(c, stream);
+               }
+       }
+       fputc('\'', stream);
+}
+
 char *sq_quote(const char *src)
 {
        char *buf;
@@ -57,6 +74,67 @@ char *sq_quote(const char *src)
        return buf;
 }
 
+char *sq_quote_argv(const char** argv, int count)
+{
+       char *buf, *to;
+       int i;
+       size_t len = 0;
+
+       /* Count argv if needed. */
+       if (count < 0) {
+               for (count = 0; argv[count]; count++)
+                       ; /* just counting */
+       }
+
+       /* Special case: no argv. */
+       if (!count)
+               return xcalloc(1,1);
+
+       /* Get destination buffer length. */
+       for (i = 0; i < count; i++)
+               len += sq_quote_buf(NULL, 0, argv[i]) + 1;
+
+       /* Alloc destination buffer. */
+       to = buf = xmalloc(len + 1);
+
+       /* Copy into destination buffer. */
+       for (i = 0; i < count; ++i) {
+               *to++ = ' ';
+               to += sq_quote_buf(to, len, argv[i]);
+       }
+
+       return buf;
+}
+
+/*
+ * Append a string to a string buffer, with or without shell quoting.
+ * Return true if the buffer overflowed.
+ */
+int add_to_string(char **ptrp, int *sizep, const char *str, int quote)
+{
+       char *p = *ptrp;
+       int size = *sizep;
+       int oc;
+       int err = 0;
+
+       if (quote)
+               oc = sq_quote_buf(p, size, str);
+       else {
+               oc = strlen(str);
+               memcpy(p, str, (size <= oc) ? size - 1 : oc);
+       }
+
+       if (size <= oc) {
+               err = 1;
+               oc = size - 1;
+       }
+
+       *ptrp += oc;
+       **ptrp = '\0';
+       *sizep -= oc;
+       return err;
+}
+
 char *sq_dequote(char *arg)
 {
        char *dst = arg;
@@ -126,8 +204,10 @@ static int quote_c_style_counted(const char *name, int namelen,
 
        if (!no_dq)
                EMIT('"');
-       for (sp = name; (ch = *sp++) && (sp - name) <= namelen; ) {
-
+       for (sp = name; sp < name + namelen; sp++) {
+               ch = *sp;
+               if (!ch)
+                       break;
                if ((ch < ' ') || (ch == '"') || (ch == '\\') ||
                    (ch == 0177)) {
                        needquote = 1;
@@ -142,8 +222,6 @@ static int quote_c_style_counted(const char *name, int namelen,
 
                        case '\\': /* fallthru */
                        case '"': EMITQ(); break;
-                       case ' ':
-                               break;
                        default:
                                /* octal */
                                EMITQ();
@@ -206,7 +284,14 @@ char *unquote_c_style(const char *quoted, const char **endp)
                                case '\\': case '"':
                                        break; /* verbatim */
 
-                               case '0'...'7':
+                               case '0':
+                               case '1':
+                               case '2':
+                               case '3':
+                               case '4':
+                               case '5':
+                               case '6':
+                               case '7':
                                        /* octal */
                                        ac = ((ch - '0') << 6);
                                        if ((ch = *sp++) < '0' || '7' < ch)
@@ -264,3 +349,41 @@ void write_name_quoted(const char *prefix, int prefix_len,
        else
                goto no_quote;
 }
+
+/* quoting as a string literal for other languages */
+
+void perl_quote_print(FILE *stream, const char *src)
+{
+       const char sq = '\'';
+       const char bq = '\\';
+       char c;
+
+       fputc(sq, stream);
+       while ((c = *src++)) {
+               if (c == sq || c == bq)
+                       fputc(bq, stream);
+               fputc(c, stream);
+       }
+       fputc(sq, stream);
+}
+
+void python_quote_print(FILE *stream, const char *src)
+{
+       const char sq = '\'';
+       const char bq = '\\';
+       const char nl = '\n';
+       char c;
+
+       fputc(sq, stream);
+       while ((c = *src++)) {
+               if (c == nl) {
+                       fputc(bq, stream);
+                       fputc('n', stream);
+                       continue;
+               }
+               if (c == sq || c == bq)
+                       fputc(bq, stream);
+               fputc(c, stream);
+       }
+       fputc(sq, stream);
+}