xread/xwrite: clip MAX_IO_SIZE to SSIZE_MAX

diff --git a/builtin/blame.c b/builtin/blame.c
index 77707819afa03703b3ee110345a79eec3d3d9d6f..079dcd3407881ce0ea988c3f487faf8ca6d3e5d2 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -21,6 +21,7 @@
 #include "parse-options.h"
 #include "utf8.h"
 #include "userdiff.h"
+#include "line-range.h"
 
 static char blame_usage[] = N_("git blame [options] [rev-opts] [rev] [--] file");
 
@@ -566,11 +567,16 @@ static void dup_entry(struct blame_entry *dst, struct blame_entry *src)
        dst->score = 0;
 }
 
-static const char *nth_line(struct scoreboard *sb, int lno)
+static const char *nth_line(struct scoreboard *sb, long lno)
 {
        return sb->final_buf + sb->lineno[lno];
 }
 
+static const char *nth_line_cb(void *data, long lno)
+{
+       return nth_line((struct scoreboard *)data, lno);
+}
+
 /*
  * It is known that lines between tlno to same came from parent, and e
  * has an overlap with that range.  it also is known that parent's
@@ -1430,7 +1436,7 @@ static void get_commit_info(struct commit *commit,
        commit_info_init(ret);
 
        encoding = get_log_output_encoding();
-       message = logmsg_reencode(commit, encoding);
+       message = logmsg_reencode(commit, NULL, encoding);
        get_ac_line(message, "\nauthor ",
                    &ret->author, &ret->author_mail,
                    &ret->author_time, &ret->author_tz);
@@ -1931,83 +1937,6 @@ static const char *add_prefix(const char *prefix, const char *path)
        return prefix_path(prefix, prefix ? strlen(prefix) : 0, path);
 }
 
-/*
- * Parsing of (comma separated) one item in the -L option
- */
-static const char *parse_loc(const char *spec,
-                            struct scoreboard *sb, long lno,
-                            long begin, long *ret)
-{
-       char *term;
-       const char *line;
-       long num;
-       int reg_error;
-       regex_t regexp;
-       regmatch_t match[1];
-
-       /* Allow "-L <something>,+20" to mean starting at <something>
-        * for 20 lines, or "-L <something>,-5" for 5 lines ending at
-        * <something>.
-        */
-       if (1 < begin && (spec[0] == '+' || spec[0] == '-')) {
-               num = strtol(spec + 1, &term, 10);
-               if (term != spec + 1) {
-                       if (spec[0] == '-')
-                               num = 0 - num;
-                       if (0 < num)
-                               *ret = begin + num - 2;
-                       else if (!num)
-                               *ret = begin;
-                       else
-                               *ret = begin + num;
-                       return term;
-               }
-               return spec;
-       }
-       num = strtol(spec, &term, 10);
-       if (term != spec) {
-               *ret = num;
-               return term;
-       }
-       if (spec[0] != '/')
-               return spec;
-
-       /* it could be a regexp of form /.../ */
-       for (term = (char *) spec + 1; *term && *term != '/'; term++) {
-               if (*term == '\\')
-                       term++;
-       }
-       if (*term != '/')
-               return spec;
-
-       /* try [spec+1 .. term-1] as regexp */
-       *term = 0;
-       begin--; /* input is in human terms */
-       line = nth_line(sb, begin);
-
-       if (!(reg_error = regcomp(&regexp, spec + 1, REG_NEWLINE)) &&
-           !(reg_error = regexec(&regexp, line, 1, match, 0))) {
-               const char *cp = line + match[0].rm_so;
-               const char *nline;
-
-               while (begin++ < lno) {
-                       nline = nth_line(sb, begin);
-                       if (line <= cp && cp < nline)
-                               break;
-                       line = nline;
-               }
-               *ret = begin;
-               regfree(&regexp);
-               *term++ = '/';
-               return term;
-       }
-       else {
-               char errbuf[1024];
-               regerror(reg_error, &regexp, errbuf, 1024);
-               die("-L parameter '%s': %s", spec + 1, errbuf);
-       }
-}
-
 /*
  * Parsing of -L option
  */
@@ -2016,15 +1945,7 @@ static void prepare_blame_range(struct scoreboard *sb,
                                long lno,
                                long *bottom, long *top)
 {
-       const char *term;
-
-       term = parse_loc(bottomtop, sb, lno, 1, bottom);
-       if (*term == ',') {
-               term = parse_loc(term + 1, sb, lno, *bottom + 1, top);
-               if (*term)
-                       usage(blame_usage);
-       }
-       if (*term)
+       if (parse_range_arg(bottomtop, nth_line_cb, sb, lno, bottom, top, sb->path))
                usage(blame_usage);
 }
 
@@ -2574,10 +2495,6 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
        bottom = top = 0;
        if (bottomtop)
                prepare_blame_range(&sb, bottomtop, lno, &bottom, &top);
-       if (bottom && top && top < bottom) {
-               long tmp;
-               tmp = top; top = bottom; bottom = tmp;
-       }
        if (bottom < 1)
                bottom = 1;
        if (top < 1)