X-Git-Url: http://git.marmaro.de/?a=blobdiff_plain;f=uip%2Fannosbr.c;h=6677d2146f21290a697ee896a3635fee67281c19;hb=d72dc17f4164fd8a3e3c56a74a66a21138d82814;hp=41b0cc295d9ac2f974d66a580d0cf85df9993e71;hpb=7480dbc14bc90f2d872d434205c0784704213252;p=mmh diff --git a/uip/annosbr.c b/uip/annosbr.c index 41b0cc2..6677d21 100644 --- a/uip/annosbr.c +++ b/uip/annosbr.c @@ -13,19 +13,27 @@ #include #include #include +#include -extern int errno; /* * static prototypes */ static int annosbr (int, char *, char *, char *, int, int, int, int); +/* + * This "local" global and the annopreserve() function are a hack that allows additional + * functionality to be added to anno without piling on yet another annotate() argument. + */ + +static int preserve_actime_and_modtime = 0; /* set to preserve access and modification times on annotated message */ int annotate (char *file, char *comp, char *text, int inplace, int datesw, int delete, int append) { - int i, fd; + int i, fd; + struct utimbuf b; + struct stat s; /* open and lock the file to be annotated */ if ((fd = lkopen (file, O_RDWR, 0)) == NOTOK) { @@ -40,7 +48,19 @@ annotate (char *file, char *comp, char *text, int inplace, int datesw, int delet return 1; } + if (stat(file, &s) == -1) { + advise("can't get access and modification times for %s", file); + preserve_actime_and_modtime = 0; + } + + b.actime = s.st_atime; + b.modtime = s.st_mtime; + i = annosbr (fd, file, comp, text, inplace, datesw, delete, append); + + if (preserve_actime_and_modtime && utime(file, &b) == -1) + advise("can't set access and modification times for %s", file); + lkclose (fd, file); return i; } @@ -139,6 +159,16 @@ annolist(char *file, char *comp, char *text, int number) return; } +/* + * Set the preserve-times flag. This hack eliminates the need for an additional argument to annotate(). + */ + +void +annopreserve(int preserve) +{ + preserve_actime_and_modtime = preserve; + return; +} static int annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, int delete, int append) @@ -174,7 +204,7 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in * as they're read in. This buffer is grown as needed later. */ - if (delete >= 0 || append != 0) { + if (delete >= -1 || append != 0) { if ((fp = fdopen(fd, "r")) == (FILE *)0) adios(NULL, "unable to fdopen file."); @@ -184,7 +214,7 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in /* * We're trying to delete a header field (annotation )if the delete flag is - * non-negative. A value greater than zero means that we're deleting the + * not -2 or less. A value greater than zero means that we're deleting the * nth header field that matches the field (component) name. A value of * zero means that we're deleting the first field in which both the field * name matches the component name and the field body matches the text. @@ -193,10 +223,10 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in * the last slash. This allows matching of both absolute and relative path * names. This is because this functionality was added to support attachments. * It might be worth having a separate flag to indicate path name matching to - * make it more general. + * make it more general. A value of -1 means to delete all matching fields. */ - if (delete >= 0) { + if (delete >= -1) { /* * Get the length of the field name since we use it often. */ @@ -235,7 +265,7 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in if (++n >= field_size - 1) { if ((field = (char *)realloc((void *)field, field_size *= 2)) == (char *)0) adios(NULL, "can't grow field buffer."); - + cp = field + n - 1; } } @@ -261,8 +291,11 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in * field, the text does not begin with a / meaning that we're looking for the * last path name component, and the last path name component matches the text. * - * o The delete flag is non-zero meaning that we're going to delete the nth field + * o The delete flag is positive meaning that we're going to delete the nth field * with a matching field name, and this is the nth matching field name. + * + * o The delete flag is -1 meaning that we're going to delete all fields with a + * matching field name. */ if (strncasecmp(field, comp, length) == 0 && field[length] == ':') { @@ -286,6 +319,9 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in } } + else if (delete == -1) + continue; + else if (++count == delete) break; } @@ -309,7 +345,8 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in else { /* * Find the end of the headers before adding the annotations if we're - * appending instead of the default prepending. + * appending instead of the default prepending. A special check for + * no headers is needed if appending. */ if (append) { @@ -318,14 +355,21 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in * reach the end of the headers. */ - while ((c = getc(fp)) != EOF) { - (void)putc(c, tmp); + if ((c = getc(fp)) == '\n') + rewind(fp); - if (c == '\n') { - (void)ungetc(c = getc(fp), fp); + else { + (void)putc(c, tmp); - if (c == '\n' || c == '-') - break; + while ((c = getc(fp)) != EOF) { + (void)putc(c, tmp); + + if (c == '\n') { + (void)ungetc(c = getc(fp), fp); + + if (c == '\n' || c == '-') + break; + } } } } @@ -355,7 +399,7 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in * copying routine uses the descriptor, not the pointer. */ - if (append || delete >= 0) { + if (append || delete >= -1) { if (lseek(fd, (off_t)ftell(fp), SEEK_SET) == (off_t)-1) adios(NULL, "can't seek."); } @@ -374,7 +418,7 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in * so the file has to be truncated or it will contain garbage. */ - if (delete >= 0 && ftruncate(fd, 0) == -1) + if (delete >= -1 && ftruncate(fd, 0) == -1) adios(tmpfil, "unable to truncate."); cpydata (tmpfd, fd, tmpfil, file); @@ -406,7 +450,7 @@ annosbr (int fd, char *file, char *comp, char *text, int inplace, int datesw, in * lkclose() fail, but that failure is ignored so it's not a problem. */ - if (delete >= 0) + if (delete >= -1) (void)fclose(fp); return 0;