X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fdelta%2Fdelta.c;h=cb63b4a407d968a85ae9618e11fa5e541347e48a;hb=8e812a2301ad9f849f1b09e95d93e55df4557ec6;hp=585bb0c7a7dc4c94ee09e6baca935e588ae14b5d;hpb=807f46452202891731b2317ef9bc9a6bc7115f23;p=elogind.git diff --git a/src/delta/delta.c b/src/delta/delta.c index 585bb0c7a..cb63b4a40 100644 --- a/src/delta/delta.c +++ b/src/delta/delta.c @@ -33,6 +33,18 @@ #include "build.h" static bool arg_no_pager = false; +static int arg_diff = -1; + +static enum { + SHOW_MASKED = 1 << 0, + SHOW_EQUIVALENT = 1 << 1, + SHOW_REDIRECTED = 1 << 2, + SHOW_OVERRIDEN = 1 << 3, + SHOW_UNCHANGED = 1 << 4, + + SHOW_DEFAULTS = + (SHOW_MASKED | SHOW_EQUIVALENT | SHOW_REDIRECTED | SHOW_OVERRIDEN) +} arg_flags = 0; static int equivalent(const char *a, const char *b) { char *x, *y; @@ -55,57 +67,47 @@ static int equivalent(const char *a, const char *b) { return r; } -#define SHOW_MASKED 1 << 0 -#define SHOW_EQUIV 1 << 1 -#define SHOW_REDIR 1 << 2 -#define SHOW_OVERRIDEN 1 << 3 -#define SHOW_UNCHANGED 1 << 4 -#define SHOW_DIFF 1 << 5 - -#define SHOW_DEFAULTS \ - (SHOW_MASKED | SHOW_EQUIV | SHOW_REDIR | SHOW_OVERRIDEN | SHOW_DIFF) - -static int notify_override_masked(int flags, const char *top, const char *bottom) { - if (!(flags & SHOW_MASKED)) +static int notify_override_masked(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_MASKED)) return 0; - printf(ANSI_HIGHLIGHT_RED_ON "[MASK]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); + printf(ANSI_HIGHLIGHT_RED_ON "[MASKED]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); return 1; } -static int notify_override_equiv(int flags, const char *top, const char *bottom) { - if (!(flags & SHOW_EQUIV)) +static int notify_override_equivalent(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_EQUIVALENT)) return 0; printf(ANSI_HIGHLIGHT_GREEN_ON "[EQUIVALENT]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); return 1; } -static int notify_override_redir(int flags, const char *top, const char *bottom) { - if (!(flags & SHOW_REDIR)) +static int notify_override_redirected(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_REDIRECTED)) return 0; - printf(ANSI_HIGHLIGHT_ON "[REDIRECT]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); + printf(ANSI_HIGHLIGHT_ON "[REDIRECTED]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); return 1; } -static int notify_override_overriden(int flags, const char *top, const char *bottom) { - if (!(flags & SHOW_OVERRIDEN)) +static int notify_override_overriden(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_OVERRIDEN)) return 0; - printf(ANSI_HIGHLIGHT_ON "[OVERRIDE]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); + printf(ANSI_HIGHLIGHT_ON "[OVERRIDEN]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); return 1; } -static int notify_override_unchanged(int flags, const char *top, const char *bottom) { - if (!(flags & SHOW_UNCHANGED)) +static int notify_override_unchanged(const char *f) { + if (!(arg_flags & SHOW_UNCHANGED)) return 0; - printf(ANSI_HIGHLIGHT_ON "[UNCHANGED]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); + printf("[UNCHANGED] %s\n", f); return 1; } -static int found_override(int flags, const char *top, const char *bottom) { +static int found_override(const char *top, const char *bottom) { char *dest; int k; pid_t pid; @@ -114,23 +116,23 @@ static int found_override(int flags, const char *top, const char *bottom) { assert(bottom); if (null_or_empty_path(top) > 0) { - notify_override_masked(flags, top, bottom); + notify_override_masked(top, bottom); goto finish; } k = readlink_malloc(top, &dest); if (k >= 0) { if (equivalent(dest, bottom) > 0) - notify_override_equiv(flags, top, bottom); + notify_override_equivalent(top, bottom); else - notify_override_redir(flags, top, bottom); + notify_override_redirected(top, bottom); free(dest); goto finish; } - notify_override_overriden(flags, top, bottom); - if (!(flags & SHOW_DIFF)) + notify_override_overriden(top, bottom); + if (!arg_diff) goto finish; putchar('\n'); @@ -226,7 +228,7 @@ finish: return r; } -static int process_suffix(int flags, const char *prefixes, const char *suffix) { +static int process_suffix(const char *prefixes, const char *suffix) { const char *p; char *f; Hashmap *top, *bottom; @@ -273,11 +275,11 @@ static int process_suffix(int flags, const char *prefixes, const char *suffix) { assert(o); if (path_equal(o, f)) { - notify_override_unchanged(flags, f, o); + notify_override_unchanged(f); continue; } - k = found_override(flags, f, o); + k = found_override(f, o); if (k < 0) r = k; @@ -293,21 +295,21 @@ finish: return r < 0 ? r : n_found; } -static int process_suffix_chop(int flags, const char *prefixes, const char *suffix) { +static int process_suffix_chop(const char *prefixes, const char *suffix) { const char *p; assert(prefixes); assert(suffix); if (!path_is_absolute(suffix)) - return process_suffix(flags, prefixes, suffix); + return process_suffix(prefixes, suffix); /* Strip prefix from the suffix */ NULSTR_FOREACH(p, prefixes) { if (startswith(suffix, p)) { suffix += strlen(p);; suffix += strspn(suffix, "/"); - return process_suffix(flags, prefixes, suffix); + return process_suffix(prefixes, suffix); } } @@ -327,7 +329,7 @@ static void help(void) { program_invocation_short_name); } -static int parse_flags(int flags, const char *flag_str) { +static int parse_flags(const char *flag_str, int flags) { char *w, *state; size_t l; @@ -335,24 +337,22 @@ static int parse_flags(int flags, const char *flag_str) { if (strncmp("masked", w, l) == 0) { flags |= SHOW_MASKED; } else if (strncmp ("equivalent", w, l) == 0) { - flags |= SHOW_EQUIV; + flags |= SHOW_EQUIVALENT; } else if (strncmp("redirected", w, l) == 0) { - flags |= SHOW_REDIR; + flags |= SHOW_REDIRECTED; } else if (strncmp("override", w, l) == 0) { flags |= SHOW_OVERRIDEN; } else if (strncmp("unchanged", w, l) == 0) { flags |= SHOW_UNCHANGED; } else if (strncmp("default", w, l) == 0) { flags |= SHOW_DEFAULTS; - } else { - log_error("Unknown type filter: %s", w); - return -1; - } + else + return -EINVAL; } return flags; } -static int parse_argv(int argc, char *argv[], int *flags) { +static int parse_argv(int argc, char *argv[]) { enum { ARG_NO_PAGER = 0x100, @@ -395,20 +395,31 @@ static int parse_argv(int argc, char *argv[], int *flags) { case '?': return -EINVAL; - case 't': - *flags = parse_flags(*flags, optarg); - if (*flags < 0) + case 't': { + int f; + f = parse_flags(optarg, arg_flags); + if (f < 0) { + log_error("Failed to parse flags field."); return -EINVAL; + } + arg_flags = f; break; + } case ARG_DIFF: - if (!optarg) { - *flags |= SHOW_DIFF; - } else { - if (parse_boolean(optarg)) - *flags |= SHOW_DIFF; + if (!optarg) + arg_diff = 1; + else { + int b; + + b = parse_boolean(optarg); + if (b < 0) { + log_error("Failed to parse diff boolean."); + return -EINVAL; + } else if (b) + arg_diff = 1; else - *flags &= ~SHOW_DIFF; + arg_diff = 0; } break; @@ -449,19 +460,21 @@ int main(int argc, char *argv[]) { int r = 0, k; int n_found = 0; - int flags = 0; log_parse_environment(); log_open(); - r = parse_argv(argc, argv, &flags); + r = parse_argv(argc, argv); if (r <= 0) goto finish; - if (flags == 0) - flags = SHOW_DEFAULTS; - if (flags == SHOW_DIFF) - flags |= SHOW_OVERRIDEN; + if (arg_flags == 0) + arg_flags = SHOW_DEFAULTS; + + if (arg_diff < 0) + arg_diff = !!(arg_flags & SHOW_OVERRIDEN); + else if (arg_diff) + arg_flags |= SHOW_OVERRIDEN; if (!arg_no_pager) pager_open(); @@ -470,7 +483,7 @@ int main(int argc, char *argv[]) { int i; for (i = optind; i < argc; i++) { - k = process_suffix_chop(flags, prefixes, argv[i]); + k = process_suffix_chop(prefixes, argv[i]); if (k < 0) r = k; else @@ -481,7 +494,7 @@ int main(int argc, char *argv[]) { const char *n; NULSTR_FOREACH(n, suffixes) { - k = process_suffix(flags, prefixes, n); + k = process_suffix(prefixes, n); if (k < 0) r = k; else