From cc57ca6ab355784f4901009184ea95a9f915ef21 Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Fri, 5 Jul 2024 09:07:33 +0000 Subject: Prepare for 2.14.3.0; add mininetstring_read, cplz.h Signed-off-by: Laurent Bercot --- src/libstddjb/mininetstring_read.c | 45 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/libstddjb/mininetstring_read.c (limited to 'src/libstddjb/mininetstring_read.c') diff --git a/src/libstddjb/mininetstring_read.c b/src/libstddjb/mininetstring_read.c new file mode 100644 index 0000000..b4439c9 --- /dev/null +++ b/src/libstddjb/mininetstring_read.c @@ -0,0 +1,45 @@ +/* ISC license. */ + +#include +#include + +#include +#include +#include + +int mininetstring_read (int fd, stralloc *sa, uint32_t *w) +{ + if (!*w) + { + unsigned char pack[2] ; + switch (fd_read(fd, (char *)pack, 2)) + { + case -1 : return -1 ; + case 0 : return 0 ; + case 1 : *w = ((uint32_t)pack[0] << 8) | (1U << 31) ; break ; + case 2 : *w = ((uint32_t)pack[0] << 8) | (uint32_t)pack[1] | (1U << 30) ; break ; + default : return (errno = EDOM, -1) ; + } + } + if (*w & (1U << 31)) + { + unsigned char c ; + switch (fd_read(fd, (char *)&c, 1)) + { + case -1 : return -1 ; + case 0 : return (errno = EPIPE, -1) ; + case 1 : *w |= (uint32_t)c | (1U << 30) ; *w &= ~(1U << 31) ; break ; + default : return (errno = EDOM, -1) ; + } + } + if (*w & (1U << 30)) + { + if (!stralloc_readyplus(sa, *w & ~(1U << 30))) return -1 ; + *w &= ~(1U << 30) ; + } + { + size_t r = allread(fd, sa->s + sa->len, *w) ; + sa->len += r ; *w -= r ; + } + return *w ? -1 : 1 ; +} -- cgit v1.2.3