// File: /workspace/github_c_makefile_star2_O2/icebert[P]pblat/htslib/sam.c
// Function: sam_open_mode_opts
char *sam_open_mode_opts(const char *fn,
                         const char *mode,
                         const char *format)
{
    char *mode_opts = malloc((format ? strlen(format) : 1) +
                             (mode   ? strlen(mode)   : 1) + 12);
    char *opts, *cp;
    int format_len;

    if (!mode_opts)
        return NULL;

    strcpy(mode_opts, mode ? mode : "r");
    cp = mode_opts + strlen(mode_opts);

    if (format == NULL) {
        // Try to pick a format based on the filename extension
        const char *ext = fn? strrchr(fn, '.') : NULL;
        if (ext == NULL || strchr(ext, '/')) {
            free(mode_opts);
            return NULL;
        }
        return sam_open_mode(cp, fn, ext+1)
            ? (free(mode_opts), NULL)
            : mode_opts;
    }

    if ((opts = strchr(format, ','))) {
        format_len = opts-format;
    } else {
        opts="";
        format_len = strlen(format);
    }

    if (strncmp(format, "bam", format_len) == 0) {
        *cp++ = 'b';
    } else if (strncmp(format, "cram", format_len) == 0) {
        *cp++ = 'c';
    } else if (strncmp(format, "cram2", format_len) == 0) {
        *cp++ = 'c';
        strcpy(cp, ",VERSION=2.1");
        cp += 12;
    } else if (strncmp(format, "cram3", format_len) == 0) {
        *cp++ = 'c';
        strcpy(cp, ",VERSION=3.0");
        cp += 12;
    } else if (strncmp(format, "sam", format_len) == 0) {
        ; // format mode=""
    } else {
        free(mode_opts);
        return NULL;
    }

    strcpy(cp, opts);

    return mode_opts;
}

// Assembly:
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
movq %rdx, %r15
movq %rsi, %r14
movq %rdi, %r12
testq %rdx, %rdx
je 0x64751
movq %r15, %rdi
callq 0x62d0
movq %rax, %rbx
addq $0xc, %rbx
jmp 0x64754
pushq $0xd
popq %rbx
testq %r14, %r14
je 0x64763
movq %r14, %rdi
callq 0x62d0
jmp 0x64766
pushq $0x1
popq %rax
addq %rax, %rbx
movq %rbx, %rdi
callq 0x69d0
testq %rax, %rax
je 0x64898
movq %rax, %rbx
testq %r14, %r14
leaq 0x20682(%rip), %rsi     # 0x84e09
cmovneq %r14, %rsi
movq %rax, %rdi
callq 0x6680
movq %rbx, %rdi
callq 0x62d0
movq %rax, %r14
addq %rbx, %r14
testq %r15, %r15
je 0x647be
pushq $0x2c
popq %rsi
movq %r15, %rdi
callq 0x6270
testq %rax, %rax
je 0x64810
movq %rax, %r12
subq %r15, %rax
jmp 0x6481f
testq %r12, %r12
je 0x64890
pushq $0x2e
popq %rsi
movq %r12, %rdi
callq 0x67c0
testq %rax, %rax
je 0x64890
movq %rax, %r15
pushq $0x2f
popq %rsi
movq %rax, %rdi
callq 0x6270
testq %rax, %rax
jne 0x64890
incq %r15
movq %r14, %rdi
movq %r12, %rsi
movq %r15, %rdx
callq 0x6467a
testl %eax, %eax
jne 0x64890
jmp 0x648f8
movq %r15, %rdi
callq 0x62d0
leaq 0x22b5e(%rip), %r12     # 0x8737d
movslq %eax, %r13
leaq 0x22da8(%rip), %rsi     # 0x875d1
movq %r15, %rdi
movq %r13, %rdx
callq 0x6330
testl %eax, %eax
je 0x6489c
leaq 0x22d96(%rip), %rsi     # 0x875d5
movq %r15, %rdi
movq %r13, %rdx
callq 0x6330
testl %eax, %eax
je 0x648a2
leaq 0x24e0e(%rip), %rsi     # 0x89663
movq %r15, %rdi
movq %r13, %rdx
callq 0x6330
testl %eax, %eax
je 0x648ab
leaq 0x24e0b(%rip), %rsi     # 0x89676
movq %r15, %rdi
movq %r13, %rdx
callq 0x6330
testl %eax, %eax
je 0x648c9
leaq 0x22d4c(%rip), %rsi     # 0x875cd
movq %r15, %rdi
movq %r13, %rdx
callq 0x6330
testl %eax, %eax
je 0x648ed
movq %rbx, %rdi
callq 0x68a0
xorl %ebx, %ebx
jmp 0x648f8
movb $0x62, (%r14)
jmp 0x648a6
movb $0x63, (%r14)
incq %r14
jmp 0x648ed
movb $0x63, (%r14)
movabsq $0x4e4f49535245562c, %rax # imm = 0x4E4F49535245562C
movq %rax, 0x1(%r14)
movabsq $0x312e323d4e4f49, %rax # imm = 0x312E323D4E4F49
jmp 0x648e5
movb $0x63, (%r14)
movabsq $0x4e4f49535245562c, %rax # imm = 0x4E4F49535245562C
movq %rax, 0x1(%r14)
movabsq $0x302e333d4e4f49, %rax # imm = 0x302E333D4E4F49
movq %rax, 0x6(%r14)
addq $0xd, %r14
movq %r14, %rdi
movq %r12, %rsi
callq 0x6680
movq %rbx, %rax
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
retq